4181: Left pan of a faulty balance weighs 100 gram more than its right pan. A Shopkeeper keeps the weight measure in the left pan while buying goods but keeps it in the right pan while selling his goods. He uses only 1 kg weight measure. If he sells his goods at the listed cost price, what is his gain?
(A) 100/9%
(B) 100/11%
(C) 200/9%
(D) 200/11%
4182: Amniocentesis is a method for:
(a) Determination of foetal sex.
(b) Separation of amino acids.
(c) Determination of the sequence of amino acids in a protein.
(d) Inducing abortion.
4183: If the angles of a triangle are in the ratio of 4 : 3 : 2, then the triangle
(a) is obtuse
(b) has one angle greater than 80°
(c) is a right triangle
(d) is acute
4184: Assertion (A):
The boiling point of water decreases as the altitude increases.
Reason (R):
The atmospheric pressure increases with altitude.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is NOT a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
4185: What causes wind to deflect toward left in the Southern hemisphere ?
(a) Rotation of the earth
(b) Magnetic field
(c) Temperature
(d) Pressure