SSC CGL GS QUIZ-3

Question 1:

Which is the method of measuring water quality?

Biological oxygen demand

Chemical oxygen demand

Total dissolved solids

All of these

Question 2:

Which of the following is true for microplastic?

Plastic pieces that are less than 5mm.

Plastic pieces that are less than 10mm.

Plastic pieces that are great than 5mm.

Plastic pieces that are great than 10mm.

Question 3:

Which of the following is a way to use water economically?

Construction of bawris

Rainwater harvesting

Drip irrigation

None

Question 4:

Acid rain is caused by increase in the atmospheric concentration of

$\mathrm{C} \mathrm{O}_2$ and $\mathrm{H}_2 \mathrm{O}$

$\mathrm{S} \mathrm{O}_2$ and $\mathrm{N} \mathrm{O}_x$

$\mathrm{N} \mathrm{H}_3$ and $\mathrm{N} \mathrm{H}_4$

$\mathrm{C} \mathrm{O}$ and $\mathrm{S} \mathrm{O}_4$

Question 5:

Which of the following metal is responsible for Minamata disease?

Mercury

Chromium

Lithium

Magnesium

Question 6:

The upper part of an aquatic ecosystem contains

Nekton

Plankton

Benthos

both (1) and (2)

Question 7:

Which of the following requires maximum energy?

Secondary consumer

Decomposer

Primary consumer

Primary producer

Question 8:

Plants growing under direct sunlight are known as-

Heliophytes

Sciophytes

Psamophytes

Dicots

Question 9:

Which of the following is the cause of the ‘Greenhouse’ effect?

Nitrogen

Carbon Dioxide

Ammonia oxide

Nitrogen Dioxide

Question 10:

The Earth summit was organized by

UNESCO

UNCED

WHO

UNICEF