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1 Environmental Chemistry MCQs

Biodegradable pollutant is:

  • DDT
  • Mercury salt
  • Domestic waste
  • Aluminum foil
0 Comments
Correct Answer: C. Domestic waste

Explanation:

Pollutants are substances that contaminate the environment and can harm living organisms. They ... Read More Details

2 Environmental Chemistry MCQs

Surface water contains:

  • Only salt
  • Organic matter
  • Salt & Organic matter
  • Suspended impurity
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Correct Answer: C. Salt & Organic matter

Explanation:

Surface water is the water present on the Earth’s surface in rivers, lakes, ... Read More Details

3 Environmental Chemistry MCQs

Ozone is formed in the upper atmosphere from oxygen by the action of:

  • Free radicals
  • Cosmic rays
  • Nitrogen oxides
  • UV-rays
0 Comments
Correct Answer: D. UV-rays

Explanation:

Ozone (O₃) is formed in the stratosphere, the upper layer of the atmosphere. ... Read More Details

4 Analytical Chemistry MCQs

Which of the following pair is not distinguished by passing H₂S?

  • Hg, Pb
  • Zn, Mn
  • As, Cd
  • Cd, Pb
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Correct Answer: A. Hg, Pb

Explanation:

In analytical chemistry, hydrogen sulfide (H₂S) is used to detect and separate metal ... Read More Details

5 Environmental Chemistry MCQs

Which chemical removes phosphates from sewage water to prevent eutrophication?

  • Alum
  • Chlorine
  • Lime
  • Permanganate
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Correct Answer: C. Lime

Explanation:

Phosphates in sewage water cause eutrophication, leading to excessive algae growth and oxygen ... Read More Details

6 Analytical Chemistry MCQs

The most useful dye for fabrics that can form hydrogen bonds is:

  • Mordant dye
  • Vat dye
  • Acid dye
  • Direct dye
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Correct Answer: D. Direct dye

Explanation:

Dyes are substances used to color fabrics. Different dyes work better with different ... Read More Details

7 Analytical Chemistry MCQs

Alum is used by dyers of cloth:

  • As water purifier
  • As mordant
  • Fire proofing fabrics
  • Softening of hard water
0 Comments
Correct Answer: B. As mordant

Explanation:

Alum is a chemical compound commonly used in dyeing fabrics. A mordant is ... Read More Details

8 Islamic Studies MCQs

A male is coffined/wrapped in _______ dressed sheets.

  • 1
  • 2
  • 3
  • 4
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Correct Answer: C. 3

Explanation:

In Islamic funeral rites, a deceased male is wrapped in three white shroud ... Read More Details

9 Islamic Studies MCQs

In how many days did Allah create the heavens and the earth?

  • Four
  • Five
  • Six
  • Seven
0 Comments
Correct Answer: C. Six

Explanation:

According to the Holy Quran, Allah created the heavens and the earth in ... Read More Details

10 Islamic Studies MCQs

Where is the grave of Hazrat Muhammad (SAW)?

  • Syria
  • Lebanon
  • Saudi Arabia
  • Jordan
0 Comments
Correct Answer: C. Saudi Arabia

Explanation:

Hazrat Muhammad (SAW), the final Prophet of Islam, is buried in Madina, Saudi ... Read More Details