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question_answer1)
The process which allows insoluble particle to settle down in a solution is called
A)
filtration done
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B)
decantation done
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C)
sedimentation done
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D)
None of these done
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question_answer2)
You have been given a mixture of iron fillings, sand and sugar. You have to separate them by
(i) use of magnet |
(ii) making solution with water |
(iii) evaporation |
(iv) filtration |
What will be correct sequence |
A)
(i) \[\to \] (ii) \[\to \] (iv) \[\to \] (iii) done
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B)
(i) \[\to \] (ii) \[\to \] (iii) \[\to \] (iv) done
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C)
(iv) \[\to \] (iii) \[\to \] (ii) \[\to \] (i) done
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D)
(ii) \[\to \] (m) \[\to \] (i) \[\to \] (iv) done
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question_answer3)
A cold drink bottle mouth was capped with a balloon. Which action can lead to increase in the size of balloon?
A)
Putting in front of fan done
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B)
Putting in normal water done
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C)
Putting in cold water done
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D)
Putting in hot water done
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question_answer4)
Which of the following statements is true?
(i) Chlorination makes the water safe for drinking |
(ii) Chlorinated water is made by distillation |
(iii) Water must be boiled for at least 10 minutes to make it fit for drinking |
(iv) Potassium paramagnet is also used to kill germs in water |
A)
(i), (iii), and (iv) done
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B)
(i), (ii), and (iii) done
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C)
(i), (ii), (iii), and (iv) done
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D)
(ii),(iii), and (iv) done
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question_answer5)
Which of the following protect us from harmful rays of sun?
A)
Ozonosphere done
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B)
Stratosphere done
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C)
Ionosphere done
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D)
Hydrosphere done
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question_answer6)
Oxygen is needed in which process?
(i) Respiration |
(ii) Burning |
(iii) Photosynthesis |
A)
(i), and (iii) done
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B)
(ii), and (iii) done
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C)
(i), and (ii) done
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D)
(i), (ii), and (iii) done
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question_answer7)
Air pressure is measured with an instrument, called
A)
Manometer done
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B)
Ammeter done
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C)
Hydrometer done
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D)
Barometer done
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question_answer8)
Which of the following changes can be possible by heating?
A)
Liquid water changes to ice done
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B)
Water vapour changes to liquid done
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C)
Ice changes to liquid water done
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D)
Water vapour changes to ice done
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question_answer9)
Which of the following is not used for making drinking water?
A)
Sedimentation done
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B)
Sublimation done
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C)
Chlorination done
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D)
Boiling done
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question_answer10)
Ozone layer protects us from
A)
LASER done
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B)
Cosmic Rays done
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C)
U.V. Rays done
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D)
All of these done
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question_answer11)
Ramesh take a glass of water, added a spoonful of sugar and pinch of salt and also squeezed the juice of a lemon into it. After stirring it properly it was filtered with a strainer. What will be left in the strainer?
A)
Sugar done
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B)
Salt done
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C)
Lemon seed done
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D)
None of these done
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question_answer12)
Which of the following will not dissolve in water?
A)
Sugar done
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B)
Salt done
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C)
Baking soda done
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D)
None of these done
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question_answer13)
When we go up in the sky. The atmospheric pressure will
A)
Increase done
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B)
Decrease done
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C)
Remain Unchanged done
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D)
Variable done
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question_answer14)
Clouds are formed in which layer of atmosphere?
A)
Lithosphere done
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B)
Ionosphere done
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C)
Troposphere done
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D)
Stratosphere done
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question_answer15)
Match the Column
| I | | II |
(a) | Lithosphere | (i) | Air |
(b) | Ionosphere | (ii) | Ozone |
(c) | Atmosphere | (iii) | Soil |
(d) | Stratosphere | (iv) | Water |
A)
(a) - (iii), (b) - (iv), (c) - (i), (d) - (ii) done
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B)
(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv) done
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C)
(a) - (ii), (b) - (iv), (c) - (i), (d) - (iii) done
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D)
(a) - (i), (b) - (ii), (c) - (iii), (d) - (i) done
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question_answer16)
The part of earth that contains water is called
A)
Atmosphere done
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B)
Lithosphere done
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C)
Hydrosphere done
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D)
Troposphere done
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question_answer17)
The figure shows a straw placed in a glass of lassi. The level of lassi in the straw rises when air is sucked out. This is because
A)
Atmospheric pressure has increased done
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B)
Air pressure inside straw is same as the atmospheric pressure done
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C)
Air pressure inside the straw becomes lower than the atmospheric pressure done
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D)
Air pressure inside the straw becomes higher than the atmospheric pressure done
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question_answer18)
Atmosphere is the part of earth which consists of
A)
Water done
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B)
Air done
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C)
Land done
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D)
All of these done
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question_answer19)
Water is known as the universal solvent because
A)
it has many uses done
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B)
it can remove all kind of dust done
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C)
It is the medium in which all body metabolism happen done
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D)
It can dissolve many substances done
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question_answer20)
The amount of water vapour in the air is called
A)
condensed air done
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B)
wet air done
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C)
humidity done
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D)
All of these done
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question_answer21)
The figure given shows the relative composition of the air. What X and Y represent respectively?
A)
Carbon dioxide, nitrogen done
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B)
Nitrogen, inert gases done
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C)
Nitrogen, Carbon dioxide done
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D)
Oxygen, carbon dioxide done
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question_answer22)
Rain water harvesting is
A)
Using rain water for irrigation done
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B)
Collecting rain water for later use. done
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C)
Water cycle maintenance done
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D)
Taking bath in rain water and dancing done
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question_answer23)
Regarding air, which of the following statement(s) is / are true
(i) Air has no mass |
(ii) Air is needed for burning |
(iii) Air exerts pressure from all sides and on everything |
A)
(i) and (ii) done
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B)
(i) and (iii) done
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C)
(ii) and (iii) done
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D)
(i), (ii) and (iii) done
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question_answer24)
Which of the following process is component of water cycle?
A)
Condensation done
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B)
Evaporation done
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C)
Both a and b done
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D)
None of these done
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question_answer25)
Air exerts pressure can be shown by which of the following example?
A)
Swimming in ocean done
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B)
Rain falling on ground done
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C)
Flowing of air through tree leaves done
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D)
Sucking up of water using straw done
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question_answer26)
Which of the following picture correctly represents the composition of air? Where P = Nitrogen, Q = Oxygen, R = Inert gas, S = Carbon dioxide
A)
B)
C)
D)
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question_answer27)
In health care system medicines are injected using syringes or needle. Filling of medicine in syringe is due to
A)
Liquid pressure done
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B)
Air pressure done
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C)
Piston pressure done
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D)
Needle pressure done
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question_answer28)
When we put a glass full of water on a flat card board the water dissolves because
A)
The card board is water proof done
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B)
Air is lighter than card board done
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C)
Attractive force between card board and glass done
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D)
Air pressure pressing the card board from below done
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question_answer29)
When we put a block of wood in fresh water it floats on it. What will happen if the same block is dropped in water from ocean (Saline) water?
A)
Settle down at the bottom done
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B)
Will be at the same level done
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C)
Float at higher level done
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D)
None of these done
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question_answer30)
Air and water are found on which planet?
A)
Mars done
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B)
Jupiter done
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C)
Earth done
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D)
All of these done
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