1) What type of reaction is carried out by the lipase in the digestion of fats?
(a) Reduction
(b)Dehydration
(c)Hydrolysis
(d)Calcification
2) "Assertion (A) Lithium is used in the light weight electrical batteries of the type found in clocks and watches.
Reason (R) The mass of Li required to release 1 mole of electron is so small. "
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
3) Which one of the following compounds is frequently found packed with drying tubes?
(a) Calcium sulphate
(b) Magnesium chloride
(c) Calcium chloride
(d) Sodium thiosulphate
4) "Metal used to make wires for safety fuses must have "
(a) very low resistivity and high melting point
(b) high resistivity and low melting point
(c) low resistivity and low melting point
(d) high resistivity and high melting point
5) Which of the following is not a natural polymer?
(a)Wool
(b) Silk
(c) Cotton
(d) Teflon
6) The ultra pure metal is obtained by
(a) calcination
(b) sublimation
(c) zone refining
(d) None of these
7) "Which one among the following polymers is used to make personal armour such as combat helmets, ballistic face masks, and ballistic vests?"
(a) Teflon
(b) PVC
(c) Bakelite
(d) Kevlar
8) "Assertion (A) A buffer solution is a mixture of a strong acid and its conjugate base or a strong base and its conjugate acid.
Reason (R) Buffer solutions keep the pH at a nearly constant value."
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
9) "Which of the following gases in the atmosphere is/are responsible for acid rains? I. Oxides of sulphur II. Oxides of nitrogen III. Oxides of carbon Select the correct answer using the codes given below"
(a) I and II
(b) I and III
(c) Only II
(d) All of these
10) Match the Following
(a) 2 4 3 1
(b) 2 3 4 1
(C) 4 3 1 2
(d) 4 1 3 2
Share Your Answers......!!!!!
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