CSS - PMS - CCE - PCS - General Science Practice

CSS - PMS - CCE - PCS - General Science MCQs

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CSS - PMS - CCE - PCS - General Science

CSS - PMS - CCE - PCS - General Science MCQs With Answers

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CSS - PMS - CCE - PCS - General Science Stars & Solar System
Which planet is famous for its prominent rings?
A. Earth
B. Mars
C. Saturn
D. Venus
Read Theory
Correct Answer: C
A: Wrong because Earth does not have prominent rings. B: Wrong because Mars does not have a ring system like Saturn. C: Correct because Saturn is famous for its bright ring system. D: Wrong because Venus has no prominent rings.
CSS - PMS - CCE - PCS - General Science DNA
DNA stands for:
A. Deoxyribonucleic Acid
B. Dynamic Nuclear Atom
C. Digital Network Access
D. Double Nitrogen Acid
Read Theory
Correct Answer: A
A: Correct because DNA is Deoxyribonucleic Acid, the hereditary material. B: Wrong because dynamic nuclear atom is not biology terminology. C: Wrong because digital network access is computing-related. D: Wrong because double nitrogen acid is incorrect.
CSS - PMS - CCE - PCS - General Science Gasses
Which gas do humans exhale in greater amount than they inhale?
A. Oxygen
B. Carbon dioxide
C. Nitrogen only
D. Helium
Read Theory
Correct Answer: B
B: Correct because cellular respiration produces carbon dioxide, so exhaled air has more CO2. A: Wrong because oxygen is consumed by the body. C: Wrong because nitrogen is mostly unchanged. D: Wrong because helium is not produced by the body.
CSS - PMS - CCE - PCS - General Science Organs
The largest organ of the human body is:
A. Heart
B. Skin
C. Brain
D. Liver
Read Theory
Correct Answer: B
B: Correct because skin is the largest organ by surface area and mass. A: Wrong because the heart is muscular pump. C: Wrong because brain is control center but not largest organ. D: Wrong because liver is large internal organ but smaller than skin.
CSS - PMS - CCE - PCS - General Science Periodic Table - Metals & Non-metals
Which metal is liquid at room temperature?
A. Iron
B. Mercury
C. Copper
D. Aluminium
Read Theory
Correct Answer: B
B: Correct because mercury is a metal that is liquid at room temperature. A: Wrong because iron is solid. C: Wrong because copper is solid. D: Wrong because aluminium is solid.
CSS - PMS - CCE - PCS - General Science Human Body System
The basic unit of life is:
A. Atom
B. Cell
C. Tissue
D. Organ
Read Theory
Correct Answer: B
B: Correct because the cell is the structural and functional unit of living organisms. A: Wrong because an atom is a unit of matter, not life. C: Wrong because tissues are groups of cells. D: Wrong because organs are made of tissues.
CSS - PMS - CCE - PCS - General Science Earth Structure
Which gas is most abundant in Earth's atmosphere?
A. Oxygen
B. Nitrogen
C. Carbon dioxide
D. Hydrogen
Read Theory
Correct Answer: B
B: Correct because nitrogen makes up the largest share of Earth's atmosphere. A: Wrong because oxygen is second-most abundant. C: Wrong because carbon dioxide is present in small concentration. D: Wrong because hydrogen is only a trace gas.
CSS - PMS - CCE - PCS - General Science Chemical Symbols
The chemical formula of water is:
A. CO2
B. H2O
C. O2
D. NaCl
Read Theory
Correct Answer: B
B: Correct because water consists of two hydrogen atoms and one oxygen atom. A: Wrong because CO2 is carbon dioxide. C: Wrong because O2 is oxygen gas. D: Wrong because NaCl is sodium chloride.
CSS - PMS - CCE - PCS - General Science Vitamins
Which vitamin is produced in the skin by sunlight?
A. Vitamin A
B. Vitamin B12
C. Vitamin C
D. Vitamin D
Read Theory
Correct Answer: D
D: Correct because sunlight helps skin synthesize vitamin D. A: Wrong because vitamin A is not mainly produced by sunlight. B: Wrong because B12 is obtained mostly from animal foods or supplements. C: Wrong because vitamin C comes from diet, especially fruits.
CSS - PMS - CCE - PCS - General Science Organs
Which organ purifies blood by filtering waste and producing urine?
A. Heart
B. Liver
C. Kidney
D. Lungs
Read Theory
Correct Answer: C
C: Correct because kidneys filter blood and remove waste through urine. A: Wrong because the heart pumps blood. B: Wrong because the liver performs metabolism and detoxification but does not make urine. D: Wrong because lungs exchange gases.
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