Important Question Engineering

1. Out of CU, Al Fe and Zn, metal which can displace all others from their salt solution is:
(a) Al
(b) Cu
(c) Z n
(d) Fe 
Ans a
2. in which of the following reactions, hydrogen is acting as an oxidizing agent?
(a) With Li to form Lid
(b) With I2 to give HI
(c) With S to give H2 S
(d) None of the above
Ans a
3. Our cells get energy by the conversion of:
(a) ATP
(b) ATP      ADP
(c) ADP      AMP
(d) CDP      CTP
Ans b
4. The number of optically active isomers of tartaric acid is:
(a) 1
(b) 3
(c) 4
(d) 2
Ans d
5. The hardness of water is estimated by:
(a) Conductivity method
(b) Titrimetric method
(c) EDTA method
(d) Distillation method
Ans c
6. What is for system that does500 cal of work on surrounding and 300 cal of heat is absorbed
(a) -200 cal
(b) -300 cal
(c) =200 cal
(d) =300 cal
Ans a
7.  the rate of a chemical reaction: increase as the reaction proceeds
(a) increase as the reaction proceeds
(b) decrease as the reaction proceeds
(c) May increase of decrease during reaction     
(d) remain constant as the reaction
Ans b
8. The electronic theory of bonding was proposed by:
(a) Pauling
(b) Lewis
(c) Bronzed
(d) Mullikan
Ans b
9. An isotropic mixture of two liquids has boiling point lower than either of them, when it :
(a) shows a negative deviation from Result’s law
(b) shows no deviation from Result’s law
(c) shows positive deviation from Rouault’s law
(d) is saturated
Ans c
10. Crouton’s rule gives the relation between:
(a) Tb and TC
(b) Tb and critical pressure
(c) Enthalpy of vaporization and boiling point
(d) normal boiling point and boiling point
Ans c
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