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WorksheetsGENERAL SCIENCE
Total questions: 60
Worksheet time: 3600secs
Name
Class
Date
1.
A virtual image can never be:
a)
smaller than the object
b)
larger than the object
c)
captured on paper
d)
upright if the object is upright
2.
A car moves with a speed of 60 km h–1 for 20 min and then at a speed of 30 km h–1 for the next 20 min.The total distance covered by the car is
a)
10 km
b)
20 km
c)
30 km
d)
40 km
3.
Stainless steel pans are usually provided with copper bottoms. The reason for this could be that
a)
Copper bottom makes the pan more durable
b)
Such pans appear colourful
c)
Copper is a better conductor of heat than the stainless steel
d)
Copper is easier to clean than the stainless steel
4.
Which of the following is true for acids ?
a)
Bitter and change red litmus blue
b)
Sour and change red litmus blue
c)
Sour and change blue litmus red
d)
Bitter and change blue litmus red
5.
Rishabh was performing an experiment with a blue coloured solution (X) in a beaker. By mistake a shaving blade fell into the beaker. After half an hour, he found that the colour of the solution in beaker changed to green (Y). What could be the solutions X and Y respectively ?
a)
Copper sulphate, Iron sulphate
b)
Iron sulphate, Copper sulphate
c)
Iron sulphate, Zinc sulphate
d)
Copper sulphate, Zinc sulphate
6.
Sunidhi was asked by her teacher to prepare a dilute sulphuric acid from concentrated sulphuric acid. What should she do ?
a)
Add water to the acid
b)
Add acid to the water
c)
Add a base to the concentrated acid
d)
Add an alkali to the concentrated acid
7.
Which of the following are chemical changes? (i) Decaying of wood
(ii) Burning of wood
(iii) Growth of wood in a tree.
(iv) Hammering of a nail into a piece of wood.
(ii) Burning of wood
(iii) Growth of wood in a tree.
(iv) Hammering of a nail into a piece of wood.
a)
(i) & (ii)
b)
(ii) & (iv)
c)
(iii) & (iv)
d)
(i), (ii) & (iii)
8.
Which of the following best explains why many birds and mammals migrate during the winter?
a)
To escape predators.
b)
To reproduce in a more favourable environment.
c)
To find a better environment in which to settle permanently
d)
To find a more favourable environment in which to hibernate.
9.
The transpiration in plants will be lowest when
a)
There is high humidity in the atmosphere.
b)
There is excess of water in the cell.
c)
Environmental conditions are very dry.
d)
There is high wind velocity.
10.
Digestion of carbohydrate takes place in
a)
Oesophagus and small intestine
b)
Stomach and large intestine
c)
Buccal cavity and small intestine
d)
Small intestine and large intestine
11.
During summer, water kept in an earthen pot becomes cool because of the phenomenon of
a)
Diffusion
b)
Transpiration
c)
Osmosis
d)
Evaporation
12.
Ram was cooking potato curry on a chulha. He was surprised to observe that the copper vessel was getting blackened from outside. It may be due to
a)
proper combustion of the fuel
b)
improper cooking of potato curry
c)
improper combustion of the fuel
d)
burning of copper vessel
13.
Which of the following process is shown in the below diagram?
a)
Harvesting
b)
Irrigation
c)
Transplantation
d)
Transpiration
14.
Look at the diagram of a plant cell. Which structures are also found in animal cells?
a)
Nucleus, Mitochondria, Cell membrane
b)
Nucleus, Chloroplasts, Vacuoles
c)
Mitochondria, Cell wall, Cell membrane
d)
Vacuoles, Mitochondria, Chloroplasts
15.
“Species which cannot be found in the area where they once lived or any other habitat are called extinct species.” Many species die or disappear from the earth if they are not able to reproduce and adapt to climate as are able to compete with other organisms. There are some species given below. Which one is the extinct species ?
a)
Tiger
b)
Dodo
c)
Elephant
d)
Deer
16.
Identify the type of asexual reproduction in hydra from the given image.
a)
Budding
b)
Fission
c)
Fragmentation
d)
Spore Formation
17.
On addition of which metal the blue coloured copper sulphate solution turns into colourless solution?
a)
Ag
b)
Hg
c)
Zn
d)
Au
18.
Complete the above table.
Where A = mass number, Z = atomic number, n = number of neutron.
In two different forms of Uranium
Where A = mass number, Z = atomic number, n = number of neutron.
In two different forms of Uranium
a)
Z is same and n is different
b)
Both Z and n are same
c)
A is same and n is different
d)
Z is different, A is same and n is different
19.
The diagram above shows the basic steps of the carbon cycle. At which step, light energy converted into chemical energy?
a)
Step 1
b)
Step 2
c)
Step 3
d)
Step 4
20.
A student used a video camera to record another student dropping a marble through water in a graduated cylinder. The students watched the video in slow motion and made the observations shown below.
During which part or parts of the marble's fall did the marble experience unbalanced forces?
During which part or parts of the marble's fall did the marble experience unbalanced forces?
a)
Part A only
b)
Parts A and B only
c)
Part C only
d)
Parts B and C only
21.
Study the two set-up-ups shown above:
Each circuit uses three batteries and a bulb. The type of batteries and bulbs used for the two circuits are the same. When the switches are closed for both set-ups, which bulb will be brighter ?
Each circuit uses three batteries and a bulb. The type of batteries and bulbs used for the two circuits are the same. When the switches are closed for both set-ups, which bulb will be brighter ?
a)
Bulb A
b)
Bulb B
c)
Both will glow equally bright
d)
Insufficient data
22.
A diagram of human digestive system is given above. In this model ‘P’ secrets a juice which helps in fat digestion. ‘Q’ secrets a hormone which regulates the sugar level of human blood. Identify the correct labelled diagram.
a)
1
b)
2
c)
3
d)
4
23.
Which of the following is the characteristic of sound wave?
a)
It is non mechanical and longitudinal wave
b)
It is mechanical and transverse wave
c)
It is non mechanical and transverse wave
d)
It is mechanical and longitudinal wave
24.
When vinegar is mixed with baking soda in a test tube, the bubbles of a gas coming out with a hissing sound on hearing the test tube. The gas is
a)
Hydrogen gas
b)
Carbon dioxide gas
c)
Nitrogen gas
d)
Oxygen gas
25.
Vapourised wax gets completely oxidised in which zone of candle flame ?
a)
Non- luminous zone
b)
Dark zone
c)
Luminous zone
d)
Both (1) and (2)
26.
The heat energy is required to change the state of a substance causes:
a)
rise in temperature
b)
no rise in its temperature
c)
separation of forces of attraction between the particles
d)
Both (2) and (3)
27.
Study the characteristics
• It is a dark coloured viscous liquid.
• It has a strong smell.
Identify the substance among the following based on the above characteristics
• It is a dark coloured viscous liquid.
• It has a strong smell.
Identify the substance among the following based on the above characteristics
a)
Kerosene
b)
Petrol
c)
Petroleum
d)
Alcohol
28.
Which metal oxide shows amphoteric nature ?
a)
Calcium
b)
Zinc
c)
Magnesium
d)
Both (1) and (3)
29.
What can you conclude about the animal's reproduction shown above?
a)
It is sexual reproduction
b)
It is mimicry
c)
It is asexual reproduction
d)
It requires both an egg and a sperm
30.
The diagram below represents the students who study Physics, Chemistry and Mathematics.
Study the diagram and identify the region which represents the students who study Physics and Mathematics but not Chemistry
Study the diagram and identify the region which represents the students who study Physics and Mathematics but not Chemistry
a)
T
b)
P+T+S
c)
V
d)
P+T+S+R+U+V
31.
Which of the above figure demonstrates the law of reflection ?
a)
1
b)
2
c)
3
d)
4
32.
A car moving at 160 km/h when passes the mark-A, driver applies brake and reduces its speed uniformly to 40 km/h at mark-C. The marks are spaced at equal distances along the road as shown above.At which part of the track the car has instantaneous speed of 100 km/h ? Neglect the size of the car.
a)
At mark-B
b)
Between mark-A and mark-B
c)
Between mark-B and mark-C
d)
Insufficient information to decide
33.
Which of the following is the composition of coal gas ?
a)
H2, C2H6,CO2
b)
H2, CH4,CO
c)
H2O, C2H6,CO
d)
H2O, CH4,CO2
34.
Which of the following is an example of strategic metal ?
a)
Fe
b)
Al
c)
Zn
d)
Ti
35.
When sand is poured over some burning material the fire goes off because:
a)
sand supports combustion
b)
supply of the air which supports combustion is cut off
c)
silicon dioxide present in soil extinguishes the fire
d)
None of these
36.
The bulb of a thermometer when dipped in petrol and then taken out, the level of the mercury thread in the thermometer:
a)
starts falling
b)
starts rising
c)
remains at the same level
d)
cannot be predicted
37.
If ‘+’ means ‘×’, ‘–’ means ‘÷’, ‘÷’ means ‘+’ and ‘×’ means ‘–’, then what will be the value of
16 ÷ 64 – 4 × 4 + 3 = ?
16 ÷ 64 – 4 × 4 + 3 = ?
a)
20
b)
15.12
c)
52
d)
None of these
38.
Which of the above figure is a correct graphical representation of latent heat of fusion of water with respect to temperature ?
a)
1
b)
2
c)
3
d)
4
39.
Which one of the following organs is NOT associated with the alimentary canal?
a)
Liver
b)
Gall bladder
c)
Diaphragm
d)
Colon
40.
The principal nitrogenous excretory compound in humans is synthesized:
a)
in liver but eliminated mostly through kidneys
b)
in kidneys but eliminated mostly through liver
c)
in kidneys as well as eliminated by kidneys
d)
in liver and also eliminated by the same through bile
41.
Part of the respiratory system where gaseous exchange takes place is:
a)
The parts starting from external nostrils upto terminal bronchioles
b)
Alveoli and their ducts
c)
All bronchi and terminal bronchioles
d)
All bronchioles
42.
When the solution of a base is diluted what will be the change in pH of the solution?
a)
pH of the solution remains the same
b)
pH of the solution will increase
c)
pH of the solution will decrease
d)
pH of the solution climbs to 7
43.
Plants look green because:
a)
They absorb green light
b)
They reflect all other colors except green light
c)
They reflect green light
d)
They absorb all the light and reflect none
44.
The pictures show a lightbulb connected to a battery. Which bulb will light?
a)
1
b)
2
c)
3
d)
4
45.
Identify X and Y in the given flow chart.
a)
X- abiotic factors, Y- biotic factors
b)
X- biotic factors, Y- abiotic factors
c)
Both are abiotic factors
d)
Both are biotic factors
46.
Which of the following released during photosynthesis is represented by X in the illustration ?
a)
Water
b)
Oxygen
c)
Sunlight
d)
Carbon dioxide
47.
A positively charged ball is placed at an equal distance between two charged objects (1 and 2). In which case will the positively charged ball move towards Object 2 ?
a)
1
b)
2
c)
3
d)
4
48.
Identify the type of motion exhibited by pendulum shown in given figure.
a)
rectilinear motion
b)
curvilinear motion
c)
rotational motion
d)
periodic motion
49.
The correct ascending order of gases as per their composition in air is:
a)
Nitrogen < Hydrogen < Oxygen
b)
Oxygen < Hydrogen < Nitrogen
c)
Hydrogen < Oxygen < Nitrogen
d)
Oxygen < Carbon dioxide < Hydrogen
50.
Which diagram correctly shows the directions of the plotting compasses placed around a bar magnet ?
a)
1
b)
2
c)
3
d)
4
51.
Silica is a :
a)
Monoatomic element
b)
Diatomic compound
c)
Triatomic compound
d)
Tetratomic compound
52.
Which one of the following is a chemical change ?
a)
Sublimation
b)
Dissolution of common salt in water
c)
Bursting of cracker
d)
Evaporation
53.
Which of the following diagrams shows the flow of air in our body ?
a)
1
b)
2
c)
3
d)
4
54.
A plane mirror makes an angle of 30° with horizontal. If a vertical ray of light strikes the mirror as shown in the figure, then the angle between mirror and the reflected ray is :
a)
30°
b)
45°
c)
60°
d)
90°
55.
If 100 oscillations are produced in 1 minute, the frequency is:
a)
100 Hz
b)
10/6 Hz
c)
6/10 Hz
d)
None of these
56.
In which of the following circuits both bulbs are lit?
a)
1
b)
2
c)
3
d)
4
57.
The arrows in the diagram below represent the movement of materials. This movement of materials indicated by the arrows is most directly involved in the processes of:
a)
Respiration
b)
Photosynthesis
c)
Digestion
d)
Circulation
58.
Two arteries and two veins are labelled in the diagram given below. Which of the following are arteries?
a)
A and B
b)
B and C
c)
B and D
d)
C and D
59.
A girl was walking slowly to the school. One day suddenly she began breath rapidly.What do you think may have caused her breathing rate to increase?
a)
too much minerals in her blood
b)
too much salt in her blood
c)
too much nitrogen in her blood
d)
too much carbon dioxide in her blood
60.
Which of the following is correct about electrorefining of metals?
a)
Pure metal is made as anode
b)
Impure metal is made as cathode
c)
The metal ions move to anode from cathode through the solution
d)
It is done by using electricity
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