GENERAL SCIENCE OBJECTIVE QUESTIONS SET 26

Here is set of GENERAL SCIENCE OBJECTIVE QUESTIONS with answers for SSC, UPSC and CDS exams.
 

GENERAL SCIENCE OBJECTIVE QUESTIONS

GENERAL SCIENCE OBJECTIVE QUESTIONS

1.A container is first filled with water and the entire water is replaced by mercury. Mercury has a density of 13.6 X 103 kg/m3 X is the weight of the water and Y is weight of the mercury, then –
A)X = Y
B)X = 13.6 Y
C)Y = 13.6 X
D)None of the above

2.Density of water is –
A)Maximum at 0° C
B)Minimum at 0° C
C)Maximum at 4° C
D)Minimum at -4° C

3.The phosphorus used in the manufacture safely matches is-
A)Red phosphorus
B)Black phosphorus
C)White phosphorus
D)Scarlet phosphorus

4.Which one of the following is not a chemical change?
A)Ripening of fruits
B)Curdling of milk
C)Freezing of water
D)Digestion of food

5.One of the main causes of air pollution in cities is emissions from vehicles like cars and trucks. Cars emit various pollutants which are bad for human health when inhaled, like-
1)Nitrogen oxides (NOX)
2)Carbon monoxide (CO)
3)Carbon dioxide (CO2)
4)Benzene

Which of the above pollutants are not tolerated by human beings even at very low levels?
A)1 and 4 only
B)1 and 2 only
C)1,2 and 3 only
D)1,2, and 4 only

6.Suppose the force of gravitation between two bodies of equal masses is F. If each mass is doubled keeping the distance of separation between them unchanged, the force would become-
A)F
B)2F
C)4F
D)¼ F

7.A body has a free fall from a height of 20 m. After falling through a distance of 5 m, the body would –
A)Lose one-fourth of its total energy
B)Lose one-fourth of its potential energy
C)Gain one-fourth of its potential energy
D)Gain three-fourth of its total energy

8.Soap is sodium or potassium salt of –
A)Stearic acid
B)Oleic acid
C)Palmitic acid
D)All of the above

9.Mass of a particular amount of substance-
1)Is the amount of matter present in it
2)Does not very from place to place
3)Changes with change in gravitational force

Select the correct answer using the code given below –
A)1,2 and 3
B)1 and 2 only
C)2 and 3 only
D)1 only

10.Which of the following substances are harmful for health if present in food items?
1)Pesticide residues
2)Lead
3)Metanil yellow
4)Mercury

Select the correct answer using the code given below –
A)1 and 2 only
B)1, 2 and 4 only
C)3 and 4 only
D)1,2,3 and 4

More GENERAL SCIENCE OBJECTIVE QUESTIONS for SSC CGLAND OTHER COMPETITIVE EXAMS here