Worksheetschemistry
Total questions: 10
Worksheet time: 5mins
Which of the following is/are correct for neutralisation reaction?
1. It is an endothermic reaction.2. Its products are salt and water. Which of the above statements is/are correct?
(a) Only 1
(b) only 2
(c) both 1 and 2
(d) neither 1 nor 2
Which of the following is not a chemical change?
(a) Burning of a candle.
(b) Cooking a food.
(c) Sublimation.
(d) Germination of seeds.
Rusting of iron can be prevented by: 1. Painting2. Galvanisation3. Electrolytic refining4. Alloying
(a) 1,2 and 3
(b) 1,2 and 4
(c) 2, 3 and 4
(d) 1, 2, 3 and 4
Which of the following is/are correct for crystallisation?1. It is a physical change.2. It is used to obtain pure substance.
(a) only 1
(b) only 2
(c) both 1 and 2
(d) neither 1 nor 2
Which of the following is/are benefits of weather forecasting?1. It allows people to prepare for bad weather.2. It helps in the planning of daily activities.Which of the above statements is/are correct?
(a) only 1
(b) only 2
(c) both 1 and 2
(d) neither 1 nor 2
Which of the following factors is/are not affected by speed and direction of wind?
(a) Location on the earth
(b) Revolution of earth
(c) Local conditions
(d) Height from ground
Which of the following is/are correct for cyclones?1. They are low-pressure systems with high speed winds.2. The wind speed is anticlockwise in Southern Hemisphere.3. Tropical cyclones are more powerful than temperate cyclones.
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1,2 and 3
Which of the following is/are correct about polymers?1. It is a long chain like unit consisting of a large number of smaller molecules.2. Smaller molecules are monomers.3. Polymers are natural. Which of the above statements are correct?
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1 ,2 and 3
Which of the following are correctly matched?1. Rayon used in textile industry.2. Nylon used for making fishing nets.3. Polyester used for manufacture of tyre cords.
(a0 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1 ,2 and 3
Which of the following statement is/are correct for thermoplastics?1. They are long-chain polymer with cross-linking.2. They can be processed repeatedly.3. Polyethene, PVC are examples of thermoplastics.Which of the above statements are correct?
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1,2 and 3
