BIHAR CGL PRE SCIENCE QUIZ-4

Question 1:

Which of the following is used to stop bleeding ?

Magnesium Chloride

Ferric chloride

Sodium chloride

Ferrous Chloride

Question 2:

Soap molecule has

One hydrophilic end

One hydrophobic end

One hydrophilic end and one hydrophobic end

Two hydrophilic end

Question 3:

Which of the following is known as rock salt ?

1) Common salt

2) Baking Soda

Only 2

only 1

Both 1 and 2

None of these

Question 4:

Dispersion medium of shaving cream is

solid

liquid

gas

none of these

Question 5:

Lichens indicate SO2 pollution because they-

Show association between algae and fungi

Grow faster than others

Are sensitive to SO2

Flourish in SO2 rich environment

Question 6:

The process of digestion of food in humans begins in ?

Stomach

Food pipe

Small intestine

Mouth

Question 7:

Biodiversity provides-

pollination of plants

pest control

wastewater treatment

All of these

Question 8:

Which disease does ELISA test detect?

cancer

T.B

polio virus

AIDS

Question 9:

Which of the following is not related to force?

$\mathrm{kg} \mathrm{ms}^{-2}$

$\mathrm{kg} \mathrm{ms}^{-1}$

Dyne

Newton

Question 10:

The time period of a vibrating body is 0.05 s, then the frequency of the wave is

25Hz

20Hz

250Hz

200Hz