Dhruv is preparing a meal and decides to use aluminium cooking utensils. Which of the following properties of aluminium are

responsible for the same?

(i) Good thermal conductivity

(ii) Good electrical conductivity

(iii) Ductility

(iv) High melting point

In a technology fair, Vanya is showcasing a new gadget that utilizes a non-metal with semiconductor properties. This gadget is designed for use in computers and televisions. What is the non-metal that Vanya is using?

During a science experiment, Krish is curious about the reaction of calcium when it is treated with water.

(i) He finds that it does not react with water.

(ii) He observes that it reacts violently with water.

(iii) He notes that it reacts less violently with water.

(iv) He sees that bubbles of hydrogen gas formed stick to the surface of calcium.

Akhil is conducting an experiment in his chemistry lab. He knows that generally metals react with acids to give salt and hydrogen gas. However, he is curious about which of the following acids does not

give hydrogen gas on reacting with metals (except Mn and Mg)?

In a chemistry lab, Asher is experimenting with different metals and their extraction methods. He wonders which of the following metals can be obtained by electrolysis of their chlorides in molten state.

(i) Na

(ii) Ca

(iii) Fe

(iv) Cu

Aanya was conducting an experiment in her chemistry lab where she mixed an alloy with dilute hydrochloric acid. To her surprise, the reaction produced a gas that made a lighted splint ‘pop’. After the reaction, she noticed a residue that, when treated with dilute nitric acid, formed a blue solution. Which one of the following pairs of metals could be present in the alloy?

During a geology field trip, Prisha and her friends discovered various metals in a riverbed. They found the following metals:

(i) Cu

(ii) Au

(iii) Zn

(iv) Ag

Which of these metals are known to exist in their native state in nature?

In a high-tech laboratory, scientists are working on refining various metals using advanced techniques. They are particularly focused on electrolytic refining for certain metals. Which of the following metals are refined by electrolytic refining?

(i) Au

(ii) Cu

(iii) Na

(iv) K

Aashi has a special element A that is soft and can be cut with a knife. This element is very reactive to air and cannot be kept in open.

It reacts vigorously with water. Identify the element from the following:

Aanya is a skilled blacksmith who loves to create various alloys for her metalwork. She often experiments with different combinations of metals and non-metals to achieve unique properties in her creations. One day, she decides to teach her apprentice about the different types of alloys. She asks, "Which among the following

alloys contain non-metal as one of its constituents?"

In a chemistry lab, Viaan is conducting an experiment where he combines substance X with substance Y, resulting in the formation of compound Z. During this reaction, X loses an electron while Y gains an electron. Which of the

following properties is not shown by Z?

Aditi is studying the electronic configurations of three elements X, Y and Z for her chemistry project. She finds that X has an electronic configuration of 2, 8; Y has 2, 8, 7; and Z has 2, 8, 2.

Which of the following is correct?

In a science fair, Tisha is demonstrating the properties of different materials. She explains that generally, non-metals are not conductors of electricity. During her presentation, she asks the audience, which of the following materials is a good conductor of electricity?

In a chemistry lab, four students Kavya, Aanya, Avani, and a classmate are studying elements with atomic numbers 6, 8, 10, and 12 respectively. They are tasked with identifying which two elements can react to form ionic bonds (or ionic compound).

$$X^+$$  

Aarush is studying the periodic table and learns that the atomic number of an element X is 19. He wonders how many electrons would be present in its ion.

In a chemistry class, Kavya is learning about elements and their properties. She discovers that the atomic number of an element Y is 17. As she experiments with ions, she wonders how many electrons would be present in the ion $$X^-$$ of this element. Can you help her find the answer?

While exploring a cave, Kabir discovered a large deposit of rock salt. He learned that rock salt is an ore of one of the following metals. This metal is:

During a school science fair, Avyaan is showcasing different types of alloys. He presents four samples to his classmates and asks them to identify which of the following alloys contains a non-metal as one of the constituents.

Aarush is a geologist studying various metals found in nature. He comes across different pairs of metals and wonders which of them exist in their native state. He lists down the following pairs:

Aditi is conducting an experiment in her chemistry lab and discovers a substance with the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would Aditi classify the substance?

Myra is conducting an experiment in her chemistry lab and needs to identify the nature of HNO₂ that she has just prepared. What is the nature of HNO₂ ?

Naira is conducting an experiment in her chemistry lab. She has two types of litmus paper: blue and red. She wants to test the pH of different solutions. She knows that when she places blue litmus paper in an acid, it will change color. She also remembers that red litmus paper is used to test for bases. Which of the following statements is correct based on her knowledge?

During a cooking class, Ishika learns that fruits such as oranges and lemons contain ........................... Acid, which is essential for enhancing flavors in dishes.

Vanya is an artist who is preparing to create a sculpture using Plaster of Paris. She knows that the setting of Plaster of Paris is crucial for her work. What process causes the Plaster of Paris to set?

Avni is conducting an experiment in her chemistry lab and needs to prepare a solution using washing soda. She remembers that washing soda has a specific formula. What is the formula for washing soda?

While conducting an experiment in her chemistry lab, Avani places a drop of solution 'X' on a strip of pH paper. To her surprise, a deep red colour is produced. The solution 'X' is

Dhruv is working in a chemical manufacturing plant where they produce various cleaning agents. One day, he is tasked with overseeing the production of bleaching powder. He needs to know which base is essential for this process. Which of the following base is used in the manufacture of bleaching powder?

Myra has a garden soil that is very acidic with a pH of 3.5. What can she do to raise the pH?

Aisha is cleaning her house and comes across three common household substances: Borax, Baking Soda, and Lemon Shine. What property do all three of these common household substances have in common?

Aarav is preparing a traditional Indian dish called tamarind rice for his family. He wants to know which acid is responsible for the unique tangy flavor of this dish.

Akhil is conducting a chemistry experiment in his school lab. He adds Sodium Hydroxide to a phenolphthalein solution. What color does the solution turn?

During a science experiment, Myra tasted a liquid and found it to be sour. She also noticed that when she dipped a blue litmus paper into the liquid, it turned red. Based on this observation, which of the following statements is true for acids?

Aarav is conducting an experiment in his chemistry lab on a humid day. He prepares hydrogen chloride gas and needs to ensure its purity. To achieve this, he passes the gas through a guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to...

Assertion : While preparing a science experiment, Neha is instructed to dissolve an acid in water. She must always add the acid slowly to the water with constant stirring.

Reasoning : Dissolving an acid in water is a highly exothermic reaction.

Neha is conducting an experiment in her chemistry lab to find out which substances can dissolve gold. She has several acids available. Which of the following is used for dissolution of Gold?

Eshaan was conducting an experiment in his chemistry lab. He added acetic acid to a solid X kept in a test tube. A colorless and odorless gas was evolved. The gas was passed through lime water which turned milky. It was concluded that...

Aashi is conducting an experiment in her chemistry lab. She combines hydrochloric acid (HCl) with sodium hydroxide (NaOH) and observes the reaction that produces water and salt. This image represents

Aarush is conducting an experiment in his chemistry lab and needs to identify different types of acids. He comes across several options and needs to determine which one is classified as a Mineral Acid.

Riyaan conducted an experiment in his chemistry lab and added a few drops of a solution to red litmus paper. To his surprise, the paper turned blue. The pH of the solution is approximately:

Saisha is building a model of a carbon atom for her chemistry project. She learns that a carbon atom can form bonds with other atoms to create different molecules. How many bonds will a C atom form?

Mira is fascinated by different forms of carbon. She learns about various substances that consist of carbon atoms. Which of the following substances does she discover?

In a jewelry-making workshop, Riyaan is looking for a material that can be used both as a cutting tool and in crafting beautiful jewelry pieces. He comes across several options and needs to choose the right one. Which material should he select?

Myra is studying different types of carbon structures in her chemistry class. She comes across a diagram that shows a carbon structure with branches. This is an example of a

Anika is studying different types of chemical bonds in her chemistry class. She learns that covalent bonds are unique in several ways.

Ria is studying different types of compounds in her chemistry class. She learns that covalent compounds are unique in their properties.

Saisha is studying different types of hydrocarbons in her chemistry class. During a lab experiment, she is asked to identify which of the following compounds is an alkyne.

Kiara is studying the structure of propene for her chemistry class. She wants to know how many carbon atoms are present in propene.

In a chemistry class, Tisha and Avani are discussing compounds. Tisha mentions that there are compounds that have the same molecular formula but different structures. What are these compounds called?

Anika is studying atoms in her chemistry class. She learns that the electrons on the outside energy level are called _______________ electrons.

Shaan is a chemistry enthusiast who is trying to identify a compound he found in his lab. The compound has the formula...

C₄H₈

Aanya is preparing for her organic chemistry exam and is reviewing different types of hydrocarbons. During her study session, she encounters a question that asks her to identify the molecular formula for Heptane. What is the correct molecular formula for Heptane?

Aanya is working on a project about different types of hydrocarbons for her chemistry class. She comes across a question about the general formula for Alkanes. Can you help her with this?

Nikita is studying different types of hydrocarbons in her chemistry class. She learns that alkanes are saturated hydrocarbons. What does this mean?

Divya is conducting an experiment in her chemistry lab. She needs to identify different types of compounds. She comes across several samples and wonders, which of the following compounds is an example of hydrocarbon?

Aashi is conducting an experiment in her chemistry lab. She discovers that certain identical atoms can link together to form long chain compounds. This property of self-linkage is known as

Viaan is conducting an experiment to compare the properties of two alcohols, CH3OH and C2H5OH. He wants to find out the difference in their formula and molecular masses.

In a chemistry class, Myra is learning about the electronic configuration of elements. She comes across carbon and wonders what its electronic configuration is.

In a geology class, Shreya learns about the composition of the earth's crust. Her teacher mentions that the amount of carbon in the earth's crust is a small percentage. Can you recall what that percentage is?

Viaan is conducting an experiment to understand why graphite is a good conductor of electricity. He learns that

Aditi is preparing to demonstrate a chemical reaction by burning magnesium ribbon in air. Before she starts, she cleans the magnesium ribbon by rubbing it with sandpaper to:

Akhil is conducting an experiment in his chemistry lab where he mixes sulphuric acid with barium chloride solution. He observes that white precipitates are formed during the reaction. What are these white precipitates?

Asher is preparing for a marathon and needs to fuel his body. He knows that the respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of his body to produce energy is essential for his performance. This process is a kind of:

Naira is conducting an experiment in her chemistry lab. She observes that during a reaction, substances are formed that have entirely different properties than the original materials. She notes the following processes involved in the reaction:

Aanya is experimenting with different substances in her kitchen. She notices that when she heats a candle, the wax melts. However, she also remembers that burning the candle produces light and heat. She wonders which of these processes does not involve a chemical reaction. That is:

Mira is conducting an experiment in her chemistry lab. She mixes different chemicals together to create a reaction. It is necessary for her to balance the chemical equation of the reaction in order to satisfy the law of:

Aarav is preparing a picnic and wants to ensure that the food he packs does not get rancid during the trip. He considers several methods to keep the food fresh. He thinks about the following options:

i. Storing the food in the air-tight containers

ii. Storing the food in refrigerator

iii. Keeping the food in clean and covered containers

iv. Always touching the food with clean hands

Myra noticed that her bicycle, which was made of iron, started to develop a reddish-brown coating after being left outside in the rain. She learned that this process, known as rusting, involves a chemical reaction which is a combination of:

Eshaan is conducting an experiment in his chemistry lab where he combines copper(II) oxide (CuO) with hydrogen gas (H₂) and applies heat. The reaction produces copper (Cu) and water (H₂O). The given chemical reaction represents:

During a chemistry experiment, Aashi heated ferrous sulphate strongly in a test tube. As the reaction progressed, she observed a decomposition that resulted in the formation of ferric oxide as the main product, accompanied by a change in colour from:

In a food storage facility, Naira is tasked with finding a way to keep fat and oil containing foods fresh for a long time. She learns that certain gases can help in this process. Which of the following gases should she use to ensure the longevity of these foods?

Viaan and Naira are conducting an experiment in their science class. They set up a diagram of an experimental apparatus that is used to carry out:

During a railway construction project, Aashi is tasked with welding the rail tracks using a displacement reaction involving iron (III) oxide and a metal X. Here X is:

Eshaan is conducting an experiment in his chemistry lab where he mixes hydrochloric acid with sodium hydroxide. This reaction is a type of:

Avyaan is conducting an experiment in his chemistry lab where he mixes Hydrogen sulphide with iodine. As a result of this reaction, he observes the formation of Hydrogen iodide and sulphur. In this redox reaction, can you identify the reducing and oxidizing agents involved?

Tisha is a jewelry maker who often works with different metals. She wants to create a beautiful piece that will last without tarnishing when displayed outdoors. Which of the following metals should she choose that does not corrode when exposed to the atmosphere?

While exploring an old shed, Ishaan noticed that some iron tools had developed a reddish-brown coating. He wondered what process caused this change in the metal.

Divya is conducting an experiment in her chemistry lab where she combines phosphorus and oxygen. This reaction is an example of:

In a chemical experiment, Myra discovered a substance that could oxidize itself while simultaneously reducing another substance. She wondered what this substance is known as:

Aashi and Ishaan are mixing two different solutions in a beaker. As they stir, they notice that the solutions react and form two new compounds. This type of reaction is known as:

Avani is experimenting with a concave lens that has a focal length of 20 cm. She wants to calculate the power of the lens. What is the power of the lens?

Advait conducts an experiment using a convex lens. He places the object at a distance of 60 cm in front of the lens and observed that the image is formed at a distance of 30 cm behind the lens. What is the power of the lens?

The sun appears two minutes before the actual sunrise due to atmospheric refraction. How does sunlight travel from space to atmosphere?

Aarush is looking into a mirror while getting ready for a party. He notices that his reflection appears erect, small, and virtual. What type of mirror is he using?

Dia is looking at herself in a convex mirror while getting ready for a party. She notices that the mirror has a unique shape that affects how she sees her reflection.

Aarush was observing a beautiful phenomenon in the sky after a rain shower. He noticed how the sunlight interacted with the water droplets, creating a stunning visual effect. What phenomenon is depicted in the given diagram?

Arjun is observing a straw placed in a glass of water. He notices that the straw appears bent at the surface of the water. Why does the straw look bent when it travels from air into water?

While hiking in the mountains, Naira noticed something unusual about the sunrise. She observed that the sun appeared above the horizon before it actually rose. This phenomenon intrigued her, and she wondered what caused it. Which of the following is an example of optical phenomena which occurs in nature due to atmospheric refraction?

Ananya is standing on a dock looking into the water. She sees a fish swimming below the surface. What does Ananya perceive about the position of the fish?

While walking through a park on a sunny day, Aisha noticed how the sunlight seemed to change colors as it passed through the tiny particles in the air. This phenomenon is known as ____________ of light.

While observing a beautiful sunset, Advait notices how the image of the sun is formed on the retina of his eye. He wonders about the nature of this image.

Naira was experimenting with a glass prism in her science lab. When she directed a beam of white light through the prism, she noticed that it split into its constituent colours. This phenomenon occurred due to

At noon, Aanya noticed that the sun appears white while she was playing outside. She wondered why this happens.

During a foggy night, Shaan and Riyaan are at the top of a tall building where danger signals are installed. The signals are red in colour, and they can easily see them from a distance because among all other colours, the red light

During a science experiment, Avni is observing the dispersion of light through a prism. She notices that the colour which is having maximum angle of deviation is

Avni is observing a beautiful pond where the water is very still. She notices that when she looks at the bottom of the pond, the light from the air above is behaving in a peculiar way. She wonders, in case of total internal reflection, light goes from

Vanya is observing a beautiful pond where light rays are entering the water. She notices that when the angle of incidence reaches a certain point, the light no longer passes into the water but instead reflects back. In this case of total internal reflection, what is the angle of refraction for the critical angle?

Aanya was fascinated by the beauty of a rainbow that appeared after the rain. She wondered what natural phenomenon was responsible for its formation.

WHEN KRISH LOOKS UP AT THE SKY FROM EARTH, IT APPEARS —————- TO HIM AS AN ASTRONAUT.

Advait has been experiencing blurred images and notices that his vision seems cloudy. After visiting the eye doctor, he learns that he has a condition affecting the lens of his eyes. What eye disease does Advait have?

If Nikita places the North Pole of a permanent magnet next to a compass, which direction will the needle move?

In a workshop, Prisha is using an electric motor to power a machine. She knows that electric motors are devices that convert _____ energy into  _____ energy.

Aarush is conducting an experiment to understand what causes magnetism. He learns that certain phenomena can create magnetic fields. What does he discover is the primary cause of magnetism?

Aashi is conducting an experiment in her physics lab. She wants to understand how different types of magnets work. She comes across a device that can be turned on and off, which she learns is called an electromagnet. What is an electromagnet?

Akhil is working on a science project where he needs to create a stronger electro-magnet. He wonders about the best ways to increase the magnetic force of his electro-magnet. What are 2 ways he can achieve this?

Aanya is conducting an experiment where she observes the flow of electric current along the positive x-axis. At the same time, she notes that the magnetic field is directed along the positive z-axis. Based on this setup, she wonders about the direction of the Lorentz force acting on a charged particle in her experiment. What direction would the Lorentz force be symbolized as?

Akhil is conducting an experiment with a wire carrying electric current. He uses the right hand rule 2 to determine the direction of the current flow. In what direction is the electric current flowing according to right hand rule 2?

Aashi is flying a drone with a positive charge moving toward the bottom of the page. As the drone flies, it encounters a magnetic field pointed toward the right of the page. What direction does the charge get pushed?

Aanya is conducting an experiment in her physics lab where she observes the behavior of magnetic fields around a current-carrying wire. She wonders about the shape of the magnetic field lines produced by the wire. What shape do you think these magnetic field lines take?

Aarav is conducting an experiment with a circular loop of wire connected to a battery. He observes the magnetic field lines produced by the current flowing through the loop. What is the nature of the magnetic field line passing through the centre of the current carrying circular loop?

Aarush is conducting an experiment with a long solenoid that carries an electric current. He wants to understand the behavior of the magnetic field inside the solenoid. What can he conclude about the magnetic field inside the solenoid?

Shreya is on a journey to explore the Earth's magnetic field. She wonders, where is Earth's magnetic field the strongest?

Aisha is conducting an experiment where she has a wire carrying an electric current placed in a magnetic field. She observes that the direction of the force acting on the wire is influenced by certain factors. What does the direction of the force on the current-carrying wire depend on?

Avni is conducting an experiment in her physics lab. She has a coil of wire connected to a galvanometer. As she moves a magnet towards the coil, she notices that the galvanometer needle deflects. This observation leads her to recall that ___ Law says that the Induced current is proportional to the change of magnetic flux.

Tara and Aanya are playing with two magnets. When they bring the magnets close together, what will happen?

Neha is conducting an experiment with a magnet. She wants to find out where the strongest attraction force of the magnet is located. She places the magnet on the table and observes its behavior. Where is the strongest attraction force of the magnet?

While conducting an experiment, Aashi and Arnav decided to break a bar magnet in half. They were curious about what would happen to each half...

Imagine Aisha is conducting an experiment with a bar magnet in her science lab. She observes the behavior of the magnetic field lines around the magnet:

Mira is conducting an experiment with a compass in her science class. She notices that the magnetic lines of force point in a specific direction. Based on her observations, she wonders where these lines are directed.

Anika is conducting an experiment in her science class. She wants to create a magnet that she can turn on and off. What kind of magnet should she use?