(A) Prop him up if he falls
(B) Spread out his weight and reduce pressure on the rope
(C) Add extra weight to keep the rope tightly stretched
(D) None of these
Answer: (B) Spread out his weight and reduce pressure on the rope
Tag: solved mcqs for css
When water is filled in a bottle and allowed to freeze, the bottle breaks because:
(A) Water expands on freezing
(B) Bottle contracts at freezing point
(C) Temperature outside is less than inside
(D) None of the above
Answer: (A) Water expands on freezing
Which element is extracted from seawater?
(A) Beryllium
(B) Magnesium
(C) Aluminium
(D) None of these
Answer: (B) Magnesium
Copper is mainly used in the production of:
(A) Brick kilns
(B) Children toys
(C) Kitchen utilities
(D) Electric wires
Answer: (D) Electric wires
People living at high altitudes (like mountains) usually have:
(A) Smaller number of Red Blood Cells
(B) Larger number of Red Blood Cells
(C) Smaller number of White Blood Cells
(D) Larger number of White Blood Cells
Answer: (B) Larger number of Red Blood Cells
The blue colour of the clear sky is due to:
(A) Reflection of light
(B) Refraction of light
(C) Diffraction of light
(D) Dispersion of light
Answer: (D) Dispersion of light
A device that converts mechanical energy into electrical energy is called:
(A) Motor
(B) Transformer
(C) Coil
(D) Generator
Answer: (D) Generator
Which of the following is the most stable element?
(A) Uranium
(B) Hydrogen
(C) Oxygen
(D) Lead
Answer: (D) Lead
Deficiency of Vitamin C causes Sailor’s Disease (Scurvy) in humans.
(A) Vitamin A
(B) Vitamin K
(C) Vitamin C
(D) Vitamin D
Answer: (C) Vitamin C
The largest artery in the human body is:
(A) Subclavian artery
(B) Aorta
(C) Brachial artery
(D) None of these
Answer: (B) Aorta