CSS - PMS - CCE - PCS - General Science
Applied Chemistry - Explosives
The main component of TNT is:
A. Nitrogen
B. Carbon
C. Trinitrotoluene
D. Hydrogen
Correct Answer: C
TNT stands for Trinitrotoluene.
CSS - PMS - CCE - PCS - General Science
Applied Chemistry - Explosives
An explosive is a substance that:
A. Melts easily
B. Burns slowly
C. Releases gas rapidly
D. Dissolves in water
Correct Answer: C
Explosives release gases suddenly causing pressure.
CSS - PMS - CCE - PCS - General Science
Applied Chemistry - Explosives
The study of explosives is a branch of:
A. Botany
B. Applied Chemistry
C. Zoology
D. Geology
Correct Answer: B
Explosives are studied under applied chemistry.
CSS - PMS - CCE - PCS - General Science
Human Body System
The largest bone in the human body is:
A. Tibia
B. Humerus
C. Femur
D. Radius
Correct Answer: C
The femur (thigh bone) is the longest and strongest bone.
CSS - PMS - CCE - PCS - General Science
Stars & Solar System
Which planet is called Earth's twin?
A. Mars
B. Venus
C. Mercury
D. Saturn
Correct Answer: B
Venus is similar in size and composition to Earth.
CSS - PMS - CCE - PCS - General Science
Vitamins
Which vitamin deficiency causes rickets?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin E
Correct Answer: C
Vitamin D deficiency weakens bones.
CSS - PMS - CCE - PCS - General Science
Measurement Units
The unit of resistance is:
A. Ohm
B. Volt
C. Watt
D. Joule
Correct Answer: A
Resistance is measured in ohms.
CSS - PMS - CCE - PCS - General Science
Measurement Units
The unit of electric current is:
A. Volt
B. Watt
C. Ampere
D. Ohm
Correct Answer: C
Electric current is measured in amperes.
CSS - PMS - CCE - PCS - General Science
Theory of Relativity
Who developed the theory of relativity?
A. Newton
B. Einstein
C. Edison
D. Tesla
Correct Answer: B
Einstein proposed special and general relativity.
CSS - PMS - CCE - PCS - General Science
Mechanics - Gravity
Which scientist discovered gravity?
A. Newton
B. Einstein
C. Galileo
D. Faraday
Correct Answer: A
Newton formulated the law of gravitation.
CSS - PMS - CCE - PCS - General Science
The largest desert in the world is:
A. Sahara
B. Arabian
C. Gobi
D. Antarctic Desert
Correct Answer: D
Antarctica is the largest desert by area.
CSS - PMS - CCE - PCS - General Science
Which layer protects Earth from UV rays?
A. Troposphere
B. Mesosphere
C. Ozone Layer
D. Exosphere
Correct Answer: C
Ozone absorbs harmful UV radiation.
CSS - PMS - CCE - PCS - General Science
Which gas causes global warming most significantly?
A. Oxygen
B. Nitrogen
C. Carbon Dioxide
D. Helium
Correct Answer: C
CO₂ is a major greenhouse gas.
CSS - PMS - CCE - PCS - General Science
Periodic Table - Metals & Non-metals
The chemical symbol of Silver is:
A. Si
B. Ag
C. Sv
D. Sl
Correct Answer: B
From Latin "Argentum".
CSS - PMS - CCE - PCS - General Science
Periodic Table - Metals & Non-metals
The chemical symbol of Gold is:
A. Go
B. Gd
C. Au
D. Ag
Correct Answer: C
From Latin "Aurum".
CSS - PMS - CCE - PCS - General Science
Scientific Instruments
Which instrument measures temperature?
A. Thermometer
B. Barometer
C. Lactometer
D. Hygrometer
Correct Answer: A
Used to measure heat.
CSS - PMS - CCE - PCS - General Science
Scientific Instruments
Which instrument measures atmospheric pressure?
A. Thermometer
B. Barometer
C. Hygrometer
D. Ammeter
Correct Answer: B
Barometer measures pressure.
CSS - PMS - CCE - PCS - General Science
Diseases
Which disease is caused by insulin deficiency?
A. Malaria
B. Diabetes
C. Cholera
D. Typhoid
Correct Answer: B
Insufficient insulin causes diabetes.
CSS - PMS - CCE - PCS - General Science
Vitamins
Which vitamin helps in blood clotting?
A. A
B. C
C. D
D. K
Correct Answer: D
Vitamin K is essential for coagulation.
CSS - PMS - CCE - PCS - General Science
The largest mammal on Earth is:
A. Elephant
B. Blue Whale
C. Giraffe
D. Hippopotamus
Correct Answer: B
Blue whale is the largest animal ever known.