UPSC NCERT ENVIRONMENT NOTES: TOPIC WISE SOLVED MCQ’s

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1. Consider the following statements:

1. Yeast ferments carbohydrates into alcohol.

2. Ethyl alcohol is produced from organic material that contains sugar.

Which of the statements given above is/are correct?

a) Only 1

b) Only 2

c) Both 1 and 2

d) Neither 1 nor 2

Ans: C

2. Consider the following statements:

1. Alcohols are used as liquid fuel called gasohol.

2. Ethanol is used as a solvent.

Which of the statements given above is/are correct?

a) Only 1

b) Only 2

c) Both 1 and 2

d) Neither 1 nor 2

Ans: C

3. Consider the following statements:

1. Antibiotics are chemical substances secreted by living substances that kill or inhibit the activity of disease-causing microorganisms.

2. The antibiotic penicillin was discovered by Louis Pasteur in 1929.

Which of the statements given above is/are correct?

a) Only 1

b) Only 2

c) Both 1 and 2

d) Neither 1 nor 2

Ans: A

4. Consider the following statements:

1. When the vaccine is administered to an individual it induces him to produce an antibody to combat the pathogen.

2. In 1997 India’s first genetically engineered vaccine against Hepatitis-B was developed.

Which of the statements given above is/are correct?

a) Only 1

b) Only 2

c) Both 1 and 2

d) Neither 1 nor 2

Ans: C

5. Consider the following statements:

1. Biotechnology is the exploitation of natural resources at the microbial and molecular level for the benefit of mankind.

2. Human Genome Project has helped to determine the exact chemical sequence that constitutes the DNA in every cell of a human body.

Which of the statements given above is/are correct?

a) Only 1

b) Only 2

c) Both 1 and 2

d) Neither 1 nor 2

Ans: C

6. Which of the following has been produced through genetic engineering?

1. Human insulin

2. Human growth hormone

3. Alpha interferon

4. Hepatitis-B vaccine

a) Only 1 and 2

b) Only 3 and 4

c) 1, 2, 3 and 4

d) None

Ans: C

7. Consider the following statements:

1. Tissue plasminogen activator (TPA) controls heart attacks.

2. Genetically engineered mice cells can be used for curing brain tumors.

Which of the statements given above is/are correct?

a) Only 1

b) Only 2

c) Both 1 and 2

d) Neither 1 nor 2

Ans: C