Example 1
What is the chemical formula of baking soda?
Answer: A) NaHCO₃
Sodium hydrogen carbonate.
General Science questions for competitive exams: rules, worked examples and practice
General science questions cover basic physics, chemistry and biology: units, everyday phenomena, the human body and diseases.
Key rules and formulas
- SI units: pressure in pascal, power in watt, frequency in hertz, work in joule.
- Vitamin deficiencies: A → night blindness, C → scurvy, D → rickets.
- Insulin is made by the pancreas; red blood cells are made in bone marrow.
- An electric fuse works on the heating effect of current.
Common traps
- Mixing up units (watt vs joule).
- Confusing which vitamin causes which disease.
Where General Science is asked
- RRB Group D (General Awareness & Current Affairs, General Science)
- RRB NTPC CBT 1 (General Awareness)
- SSC CGL Tier 1 (General Awareness)
- SSC CGL Tier 2 (General Awareness)
- SSC CHSL Tier 1 (General Awareness)
- UPSC CSE GS 1 (General Science and Current Events)
Worked examples
Example 2
How many bones are there in an adult human body?
Answer: B) 206
Babies have about 300; many fuse into 206.
Example 3
Deficiency of Vitamin C causes
Answer: D) Scurvy
Scurvy causes bleeding gums.
More General Science practice questions
- Which gas is most abundant in Earth's atmosphere?
- Which is the largest organ of the human body?
- Red blood cells are produced in the
- Acid rain is mainly caused by
- Insulin is produced by the
- Which acid is present in the human stomach?
- Which gas is released during photosynthesis?
- What is the SI unit of pressure?
- The speed of light in vacuum is approximately
- Haemoglobin contains which metal?
- Sound cannot travel through
- What is the SI unit of electrical resistance?
- Brass is an alloy of
- What is the SI unit of power?
- Which is called the powerhouse of the cell?
- Laughing gas is
- The functional unit of the kidney is the
- Which metal is liquid at room temperature?
- What is the SI unit of work and energy?
- Deficiency of Vitamin D in children causes
- The filament of an electric bulb is made of
- The smallest bone in the human body is the
- An electric fuse works on the principle of
- What is the SI unit of frequency?
- Which plant hormone helps fruits ripen?
- Which is the lightest element?
- Where is the headquarters of the World Health Organization?
- The atomic number of an element equals the number of
- What is the SI unit of force?
- Newton's first law of motion is also called the law of
- Night blindness is caused by deficiency of
- Which acid is present in vinegar?
- Goitre is caused by deficiency of
- Photosynthesis takes place in the
- Where is the headquarters of ISRO?
- Aditya-L1 is placed near the Sun–Earth Lagrange point L1 to study
- LIGO observatories detect
- Chandrayaan-3's lander touched down near the Moon's
- Graphene is an allotrope of
- Blockchain is best described as
- Which radiation has the highest penetrating power?
- Antibiotics are NOT effective against
- A fast breeder reactor
- The BCG vaccine protects against
- Qubits in quantum computers can exist in
- mRNA vaccines work by
- CRISPR-Cas9 is a technology used for
Frequently asked questions
What is General Science in competitive exams?
General science questions cover basic physics, chemistry and biology: units, everyday phenomena, the human body and diseases.
Which exams ask General Science questions?
On MockBazaar, General Science questions appear in RRB Group D, RRB NTPC CBT 1, SSC CGL Tier 1, SSC CGL Tier 2, SSC CHSL Tier 1, UPSC CSE GS 1.
What is the most common mistake in General Science?
Mixing up units (watt vs joule).