CSS - PMS - CCE - PCS - General Science
Periodic Table - Metals & Non-metals
The pH value of pure water is:
A. 5
B. 6
C. 7
D. 8
Correct Answer: C
Pure water is neutral.
CSS - PMS - CCE - PCS - General Science
Which gas is used in balloons?
A. Oxygen
B. Nitrogen
C. Helium
D. Carbon Dioxide
Correct Answer: C
Helium is lighter than air.
CSS - PMS - CCE - PCS - General Science
Stars & Solar System
The nearest planet to the Sun is:
A. Venus
B. Earth
C. Mercury
D. Mars
Correct Answer: C
Mercury is closest to the Sun.
CSS - PMS - CCE - PCS - General Science
Waves & Sound - Sound Waves
Sound cannot travel through:
A. Water
B. Air
C. Steel
D. Vacuum
Correct Answer: D
Sound needs a medium to travel.
CSS - PMS - CCE - PCS - General Science
Human Body System
Which organ produces insulin?
A. Liver
B. Kidney
C. Pancreas
D. Heart
Correct Answer: C
Insulin regulates blood sugar.
CSS - PMS - CCE - PCS - General Science
Human Body System
The human heart has how many chambers?
A. 2
B. 3
C. 4
D. 5
Correct Answer: C
Two atria and two ventricles.
CSS - PMS - CCE - PCS - General Science
Stars & Solar System
Which is the smallest planet in the Solar System?
A. Mars
B. Mercury
C. Venus
D. Neptune
Correct Answer: B
Mercury is the smallest recognized planet.
CSS - PMS - CCE - PCS - General Science
Stars & Solar System
Which planet has the most rings?
A. Mars
B. Earth
C. Saturn
D. Venus
Correct Answer: C
Saturn is famous for its ring system.
CSS - PMS - CCE - PCS - General Science
Parts of Plant
Photosynthesis requires:
A. Oxygen
B. Carbon Dioxide
C. Nitrogen
D. Helium
Correct Answer: D
Plants use CO₂ to make food.
CSS - PMS - CCE - PCS - General Science
Parts of Plant
Which part of the plant conducts photosynthesis?
A. Root
B. Stem
C. Leaf
D. Flower
Correct Answer: C
Leaves contain chlorophyll.
CSS - PMS - CCE - PCS - General Science
Human Health
The largest organ of the human body is:
A. Liver
B. Brain
C. Skin
D. Heart
Correct Answer: C
Skin is the body's largest organ.
CSS - PMS - CCE - PCS - General Science
Human Health
Which gas is essential for respiration?
A. Nitrogen
B. Oxygen
C. Helium
D. Neon
Correct Answer: B
Oxygen is required for cellular respiration.
CSS - PMS - CCE - PCS - General Science
Animals
The study of animals is called:
A. Zoology
B. Botany
C. Anatomy
D. Ecology
Correct Answer: A
Zoology is the branch of animal science.
CSS - PMS - CCE - PCS - General Science
Plants
The study of plants is called:
A. Zoology
B. Botany
C. Geology
D. Ecology
Correct Answer: B
Botany deals with plants.
CSS - PMS - CCE - PCS - General Science
Blood System
Which blood group is called the universal recipient?
A. O
B. A
C. B
D. AB Positive
Correct Answer: D
AB+ can receive blood from all groups.
CSS - PMS - CCE - PCS - General Science
Blood System
Which blood group is called the universal donor?
A. A
B. B
C. AB
D. O Negative
Correct Answer: D
O− can donate to all blood groups.
CSS - PMS - CCE - PCS - General Science
Vitamins
Which vitamin prevents scurvy?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin K
Correct Answer: B
Deficiency causes scurvy.
CSS - PMS - CCE - PCS - General Science
Stars & Solar System
The Earth revolves around the Sun in:
A. 24 hours
B. 30 days
C. 365¼ days
D. 180 days
Correct Answer: C
One revolution takes about 365.25 days.
CSS - PMS - CCE - PCS - General Science
Light (Optics) - Rainbow
The speed of light is approximately:
A. 300,000 km/s
B. 150,000 km/s
C. 100,000 km/s
D. 500,000 km/s
Correct Answer: A
Light travels at about 3×10⁸ m/s.
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. Zinc
Correct Answer: B
Mercury remains liquid at room temperature.