General Science MCQs for OSSC exams cover a wide range of topics, including physics, chemistry, biology, and environmental science. By studying these MCQs, candidates can improve their chances of success in the OSSC competitive exams.
- Larynx is called: –
A. Voice box
B. Music box
C. Respiratory organ
D. None of these
Answer: A
- The egg is
A. Egg gamete
B. Female gamete
C. Both of these
D. None of these
Answer: B
- Thyroxin produced by
A. Pituitary gland
B. Adrenal gland
C. Thyroid gland
D. Testes
Answer: C
- There are ______ pairs of chromosomes in human cell.
A. 23
B. 46
C. 22
D. All are wrong
Answer: A
- Initially girls grow ______ than boys.
A. Faster
B. Slower
C. Both of these
D. None of these
Answer: A
- The period of maturity of reproductive organs is called.
A. Adolescene period
B. adulthood
C. Gestation period
D. None of these
Answer: A
- Fertilisation is called
A. To produce sperm
B. To produce eggs
C. Fusion of sperms and eggs
D. All of these
Answer: C
- Puberty age in females is
A. 10-12
B. 12-14
C. 8-10
D. More than 14 years
Answer: A
- The number of chromosomes is present in human cell: –
A. 22
B. 23
C. 24
D. 46
Answer: D
- The male hormone is
A. Estragon
B. Projestrone
C. Testosterone
D. All of these
Answer: C
- Highest percentage of air consists of
A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Argon
Answer: C
- The Taj Mahal is being affected by
A. Noise pollution
B. Air pollution
C. Water pollution
D. None of these
Answer: B
- Most polluted river in the world is
A. Yamuna
B. Cavery
C. Chepat
D. Ganga
Answer: D
- Air pollution causes
A. Global warming
B. Respiratory problems
C. Soil erosion
D. None of these
Answer: B
- The percentage of nitrogen in the air is
A. 21%
B. 78%
C. 87%
D. 70%
Answer: C