SSC CGL General Science Questions
10 questions on General Science for SSC CGL. Each comes with the correct answer and a worked explanation.
- Questions
- 10
- Moderate
- 10
General Science questions with solutions
What is the chemical formula of common salt?
- (A)NaOH
- (B)NaCl
- (C)KCl
- (D)Na₂CO₃
Show answer and explanation
Correct answer: (B) NaCl
Common salt is sodium chloride, an ionic compound of sodium and chlorine with the formula NaCl. Hence, 'NaCl' is the correct answer among the given options.
Which vitamin is synthesised in the human body on exposure to sunlight?
- (A)Vitamin A
- (B)Vitamin K
- (C)Vitamin C
- (D)Vitamin D
Show answer and explanation
Correct answer: (D) Vitamin D
The skin produces Vitamin D when exposed to ultraviolet rays in sunlight; its deficiency causes rickets in children. Hence, 'Vitamin D' is the correct answer among the given options.
What is the SI unit of force?
- (A)Newton
- (B)Joule
- (C)Pascal
- (D)Watt
Show answer and explanation
Correct answer: (A) Newton
The SI unit of force is the newton (N); the joule measures energy, the watt measures power and the pascal measures pressure. Hence, 'Newton' is the correct answer among the given options.
Which cell organelle is known as the powerhouse of the cell?
- (A)Ribosome
- (B)Mitochondria
- (C)Golgi apparatus
- (D)Nucleus
Show answer and explanation
Correct answer: (B) Mitochondria
Mitochondria produce most of the cell's energy in the form of ATP through cellular respiration, hence the name powerhouse of the cell. Hence, 'Mitochondria' is the correct answer among the given options.
Which gas is the most abundant in the Earth's atmosphere?
- (A)Argon
- (B)Oxygen
- (C)Nitrogen
- (D)Carbon dioxide
Show answer and explanation
Correct answer: (C) Nitrogen
Nitrogen makes up about 78% of the Earth's atmosphere by volume, followed by oxygen at about 21%. Hence, 'Nitrogen' is the correct answer among the given options.
What is the pH value of pure water at 25°C?
- (A)1
- (B)14
- (C)0
- (D)7
Show answer and explanation
Correct answer: (D) 7
Pure water is neutral, with a pH of 7 at 25°C; values below 7 are acidic and values above 7 are basic. Hence, '7' is the correct answer among the given options.
Which blood group is known as the universal donor?
- (A)A positive
- (B)O negative
- (C)B negative
- (D)AB positive
Show answer and explanation
Correct answer: (B) O negative
O negative blood has no A, B or Rh antigens on red cells, so it can be given to patients of any blood group; AB positive is the universal recipient. Hence, 'O negative' is the correct answer among the given options.
Which metal is liquid at room temperature?
- (A)Sodium
- (B)Mercury
- (C)Zinc
- (D)Aluminium
Show answer and explanation
Correct answer: (B) Mercury
Mercury is the only metal that is liquid at normal room temperature; it is used in thermometers and barometers. Hence, 'Mercury' is the correct answer among the given options.
Deficiency of iodine in the diet causes which disease?
- (A)Goitre
- (B)Anaemia
- (C)Scurvy
- (D)Rickets
Show answer and explanation
Correct answer: (A) Goitre
Iodine is needed to make thyroid hormones; its deficiency causes goitre, an enlargement of the thyroid gland. Hence, 'Goitre' is the correct answer among the given options.
Which instrument is used to measure atmospheric pressure?
- (A)Thermometer
- (B)Anemometer
- (C)Hygrometer
- (D)Barometer
Show answer and explanation
Correct answer: (D) Barometer
A barometer measures atmospheric pressure; a hygrometer measures humidity and an anemometer measures wind speed. Hence, 'Barometer' is the correct answer among the given options.
Frequently asked questions
How many SSC CGL General Science questions can I practise here?
10 questions — 10 moderate. 10 are shown on this page with answers and explanations, and the practice set draws from all of them.
How should I practise General Science for SSC CGL?
Read through a few solved questions first to see the method, then take a timed practice set. Afterwards, check which questions you got wrong or spent longest on and redo those before moving on.