Fundamentals of Environmental Chemistry [NTA-NET (UGC-NET) Environmental Science (89)]: Questions 15 - 19 of 62

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Question 15

Appeared in Year: 2017

Question MCQ▾

Which of the following statements is true for an ideal dilute solution? (November)

Choices

Choice (4)Response

a.

Solute obeys Henry՚s law and solvent obeys Raoult՚s law

b.

Solute obeys Raoult՚s law and solvent obeys Henry՚s law

c.

Solute and solvent both obey Henry՚s law

d.

Solute and solvent both obey Raoult՚s law

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Question 16

Appeared in Year: 2017

Question MCQ▾

Which of the following is not a heavy metal?

Choices

Choice (4)Response

a.

Aluminum

b.

Bismuth

c.

Mercury

d.

Lead

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Question 17

Appeared in Year: 2016

Question MCQ▾

Elements that cycle in the environment and that also have a gaseous phase at some point in their cycle include which of the following? (July)

i. Phosphorus

ii. Sulphur

iii. Carbon

Choose the correct answer:

Choices

Choice (4)Response

a.

i and iii only

b.

ii only

c.

ii and iii only

d.

i only

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Question 18

Appeared in Year: 2015

Question MCQ▾

The radiation flux emitted per unit solid angle in a specified direction by a unit area of source is called (December)

Choices

Choice (4)Response

a.

Radiance

b.

Exitance

c.

Radiant flux

d.

Irradiance

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Question 19

Appeared in Year: 2017

Question MCQ▾

The half-life period of a radioactive substance is 32 h. How much time it would take for its 75% disintegration?

Choices

Choice (4)Response

a.

64 h

b.

96 h

c.

128 h

d.

16 h

Edit