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1 Environmental Science MCQs

Which of the following water pollutants causes Minamata disease?

  • Methyl Mercury
  • Lead
  • Salmonella
  • Perchlorate
0 Comments
Correct Answer: A. Methyl Mercury

Explanation:

Minamata disease is a severe neurological disorder caused by the consumption of fish ... Read More Details

2 Environmental Science MCQs

What is the process of converting wet waste into manure called?

  • Metabolism
  • Conservation
  • Incineration
  • Composting
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Correct Answer: D. Composting

Explanation:

Composting is the natural process of converting wet organic waste such as vegetable ... Read More Details

3 Biology Mcqs

Which of the following organisms releases molecular oxygen (O₂) into water?

  • E. coli
  • Phytoplankton
  • Amoeba
  • Salmonella
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Correct Answer: B. Phytoplankton

Explanation:

Phytoplankton are microscopic plant-like organisms that float near the surface of oceans, lakes, ... Read More Details

4 Chemistry MCQs

A colloidal system in which a liquid is dispersed in another liquid is called:

  • Precipitate
  • Gel
  • Emulsion
  • Sol
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Correct Answer: C. Emulsion

Explanation:

A colloidal system is a mixture in which one substance is evenly dispersed ... Read More Details

5 Chemistry MCQs

Which metal is the best conductor of electricity?

  • Copper
  • Gold
  • Silver
  • Lead
0 Comments
Correct Answer: C. Silver

Explanation:

Electrical conductivity is a physical property of metals that measures their ability to ... Read More Details

6 Biology Mcqs

Which of the following is an example of a rhizome?

  • Carrot
  • Tomato
  • Ginger
  • Garlic
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Correct Answer: C. Ginger

Explanation:

A rhizome is a type of modified underground stem that grows horizontally beneath ... Read More Details

7 Everyday Science MCQs

Which planet is called the “Red Planet”?

  • Mars
  • Venus
  • Jupiter
  • Saturn
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Correct Answer: A. Mars

Explanation:

The planet called the “Red Planet” is Mars, which is the fourth planet ... Read More Details

8 Biology Mcqs

Which of the following is a micronutrient for plants?

  • Oxygen
  • Nitrogen
  • Boron
  • Carbon
0 Comments
Correct Answer: C. Boron

Explanation:

Plants require a variety of nutrients to grow, develop, and carry out essential ... Read More Details

9 Chemistry MCQs

Why is diamond harder than graphite?

  • Difference in crystalline structure
  • Tetrahedral structure of diamond
  • Difference in layers of atoms
  • None of these
0 Comments
Correct Answer: A. Difference in crystalline structure

Explanation:

Diamond and graphite are both allotropes of carbon, meaning they are composed of ... Read More Details

10 Biology Mcqs

A seed can germinate even in the absence of which of the following?

  • Oxygen
  • Light
  • Moisture
  • Suitable temperature
0 Comments
Correct Answer: B. Light

Explanation:

Seed germination is the process by which a dormant seed develops into a ... Read More Details