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question_answer1)
To describe how much matter is there in something, we use the term:
A)
Weight done
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B)
Length done
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C)
Mass done
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D)
Volume done
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E)
None of these done
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question_answer2)
Which of the following statements is correct?
A)
An object will float on the surface of water when its density is less than that of water in which it is placed. done
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B)
An object will float when its density is more than that of water in which it is placed. done
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C)
Both [a] and [b] are correct done
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D)
Both [a] and [b] are incorrect done
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E)
None of these done
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question_answer3)
Which among the following is an element?
A)
Water done
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B)
Sugar done
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C)
Hydrogen done
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D)
Washing soda done
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E)
None of these done
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question_answer4)
Which of the following is not a matter?
A)
Water done
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B)
Heat done
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C)
Air done
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D)
Plant done
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E)
None of these done
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question_answer5)
Which of the following is not soluble with water?
A)
Copper sulphate done
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B)
Alcohol done
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C)
Wax done
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D)
Potassium permanganate done
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E)
None of these done
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question_answer6)
Which of the following statements is correct?
A)
Mass of an object varies at different places. done
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B)
Weight of an object varies at different places. done
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C)
Both mass and weight remains constant. done
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D)
Both mass and weight varies at different places. done
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E)
None of these done
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question_answer7)
Which of the following gases does not dissolve in water?
A)
Oxygen done
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B)
Carbon dioxide done
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C)
Methane done
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D)
Ammonia done
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E)
None of these done
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question_answer8)
Hand picking method is effective in:
A)
Gaseous mixture done
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B)
Solid mixture done
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C)
Liquid mixture done
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D)
All the above done
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E)
None of these done
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question_answer9)
Which of the following is essential for performing winnowing?
A)
Soil done
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B)
Wind done
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C)
Water done
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D)
All the above done
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E)
None of these done
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question_answer10)
Density of an object refers to:
A)
Product of mass and volume. done
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B)
Addition of mass and volume. done
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C)
Mass per unit temperature. done
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D)
Mass per unit volume. done
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E)
None of these done
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question_answer11)
A basket containing the following materials:
i. Iron sheet |
ii. Glass tumbler |
iii. Tissue paper |
iv. Lens of spectacles |
Which of the above material is transparent?
A)
i and ii done
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B)
ii and iv done
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C)
ii and iii done
clear
D)
i and iv done
clear
E)
None of these done
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question_answer12)
Match the following:
Column A | Column B |
(i) | Metals | [A] | Dull appearance |
(ii) | Ground glass | [B] | Transparent |
(iii) | Wood | [C] | Lustrous |
(iv) | Alcohol | [D] | Translucent |
A)
(i-D), (ii-C), (iii-A), (iv-B) done
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B)
(i-A), (ii-D), (iii-B), (iv-C) done
clear
C)
(i-C), (ii-D), (iii-A), (iv-B) done
clear
D)
(i-B), (ii-C), (iii-D), (iv-A) done
clear
E)
None of these done
clear
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question_answer13)
Which among the following is lighter than liquid water?
A)
Copper done
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B)
Glass done
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C)
Ice done
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D)
Iron done
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E)
None of these done
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question_answer14)
Which of the following is not a compound?
A)
Water done
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B)
Sand done
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C)
Sodium done
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D)
Washing soda done
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E)
None of these done
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question_answer15)
Which of the following is composed of carbon, hydrogen and oxygen?
A)
Water done
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B)
Washing soda done
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C)
Vinegar done
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D)
Common salt done
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E)
None of these done
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question_answer16)
Which one among the following materials will not float on the surface of water?
A)
Saw-dust done
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B)
Ice done
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C)
Petrol done
clear
D)
Silver done
clear
E)
None of these done
clear
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question_answer17)
The basic unit that makes up all matter.
A)
Substance done
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B)
Element done
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C)
Atom done
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D)
Compound done
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E)
None of these done
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question_answer18)
Which of the following is not a property of wood?
A)
Hardness done
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B)
Dull appearance done
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C)
Lustrous done
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D)
Opaqueness done
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E)
None of these done
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question_answer19)
The difference in the taste of different compounds is because:
A)
They have different colours. done
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B)
Their molecules are different from each other. done
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C)
Their molecules are same. done
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D)
All the above done
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E)
None of these done
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question_answer20)
Which of the following is not an element?
A)
Oxygen done
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B)
Zinc done
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C)
Mercury done
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D)
Sand done
clear
E)
None of these done
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question_answer21)
Which among the following statements is not correct for the separation of substances?
A)
It is used for removing undesirable constituents. done
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B)
It is used to remove harmful components. done
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C)
It is used to obtain undesirable constituents. done
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D)
It is done for obtaining the pure substances. done
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E)
None of these done
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question_answer22)
Which of the following methods is used to separate soluble impurities?
A)
Decantation done
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B)
Sedimentation done
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C)
Evaporation done
clear
D)
Filtration done
clear
E)
None of these done
clear
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question_answer23)
Filtered tea in an example of:
A)
Element done
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B)
Homogeneous mixture done
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C)
Heterogeneous mixture done
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D)
Soluble impurity done
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E)
None of these done
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question_answer24)
While preparing pulao, Ragini found some husk was mixed with the raw rice. By using which of the following methods she can separate husk from rice?
A)
Threshing done
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B)
Winnowing done
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C)
Filtration done
clear
D)
Sieving done
clear
E)
None of these done
clear
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question_answer25)
Petrol and kerosene can be separated by the process of:
A)
Filtration done
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B)
Winnowing done
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C)
Sieving done
clear
D)
Distillation done
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E)
None of these done
clear
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question_answer26)
While rinsing rice in the kitchen with water, before cooking, which process is used generally to separate rice from water?
A)
Decantation done
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B)
Filtration done
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C)
Winnowing done
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D)
Evaporation done
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E)
None of these done
clear
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question_answer27)
A ______ is used to separate small stones from sand.
A)
Glass done
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B)
Winnowing fan done
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C)
Beaker done
clear
D)
Sieve done
clear
E)
None of these done
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question_answer28)
Few steps are given below to separate salt from sand. Arrange the given steps in a correct sequence.
i. Decantation is done. |
ii. Water is added to the mixture of sand and salt. |
iii. Stir the mixture of salt, sand and water. |
iv. Evaporation is done. |
A)
i, ii, iii, iv done
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B)
iii, iv, i, ii done
clear
C)
ii, iii, i, iv done
clear
D)
ii, i, iv, iii done
clear
E)
None of these done
clear
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question_answer29)
After harvesting of crops ____ is separated from grain by winnowing.
A)
Stalk done
clear
B)
Chaff done
clear
C)
Water done
clear
D)
Flour done
clear
E)
None of these done
clear
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question_answer30)
Solubility of most of the solids with the increase in temperature.
A)
Decrease done
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B)
Increase done
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C)
Remains the same done
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D)
Is not affected done
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E)
None of these done
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question_answer31)
Which of the following processes is used to separate insoluble impurities?
A)
Evaporation done
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B)
Distillation done
clear
C)
Filtration done
clear
D)
Both [a] and [c] done
clear
E)
None of these done
clear
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question_answer32)
Difference in _____, is utilizes in the process of winnowing for the separation of two solids.
A)
Shape done
clear
B)
Size done
clear
C)
Weight done
clear
D)
Colour done
clear
E)
None of these done
clear
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question_answer33)
The process which is used to increase the rate of sedimentation by helping the suspended particles to settle down rapidly is called:
A)
Threshing done
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B)
Loading done
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C)
Filtration done
clear
D)
Winnowing done
clear
E)
None of these done
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question_answer34)
Which of the following is not a kind of filter?
A)
Strainer done
clear
B)
Wire-mesh done
clear
C)
Glass beaker done
clear
D)
Muslin cloth done
clear
E)
None of these done
clear
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question_answer35)
A mixture containing saw-dust and iron nails. Iron-nails can be separated from saw-dust by using:
A)
Filtration method done
clear
B)
Distillation method done
clear
C)
Magnetic separation done
clear
D)
Decantation method done
clear
E)
None of these done
clear
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question_answer36)
The maximum amount of a substance which can be dissolved in 100 grams of water at a given temperature, is known as ____ of that substance.
A)
Solution done
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B)
Solubility done
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C)
Availability done
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D)
Deficiency done
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E)
None of these done
clear
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question_answer37)
Water is known as universal solvent because:
A)
It is colourless. done
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B)
It dissolves many substances in it. done
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C)
It is odourless. done
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D)
It does not dissolve any substance in it. done
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E)
None of these done
clear
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question_answer38)
Which process is used to separate butter from milk?
A)
Filtration done
clear
B)
Loading done
clear
C)
Sieving done
clear
D)
Churning done
clear
E)
None of these done
clear
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question_answer39)
Which shape of filter paper is preferred for the process of filtration?
A)
Square shape done
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B)
Cubical shape done
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C)
Rectangular shape done
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D)
Conical shape done
clear
E)
None of these done
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question_answer40)
Metallic parts of a scooter from a heap of waste materials can be collected with the help of:
A)
Chlorine done
clear
B)
Alum done
clear
C)
Electromagnet done
clear
D)
Sand done
clear
E)
None of these done
clear
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