Wednesday, April 8, 2015

Chemistry 4

Chemistry 4

Q-1 What is the unit of pressure?
(a) Pascel
(b) Joule
(c) Watt
(d) H2

Q-2 Newton is the unit of
(a) Force
(b) Pressure
(c) Temp.
(d) None

Q-3 1 hour =?
(a) 3500 sec
(b) 3600 sec
(c) 3800 sec
(d) 3100 sec

Q-4 What is 450 in Kelvin
(a) 318.15k
(b) 300k
(c) 315k
(d) 311k

Q-5 0.64 A0 in meter will be
(a) 64 × 10-10 m
(b) 65 × 10-10 m
(c) 66 × 10-10 m
(d) None

Q-6 Air is a
(a) Pure substance
(b) Mixture
(c) Compound
(d) None

Q-7 Sodium Chloride is a
(a) Pure substance
(b) Mix.
(c) a and b
(d) None

Q-8 21 Carrot gold is
(a) Mixture
(b) Pure Substance
(c) a and b
(d) None

Q-9 Mixture are of …….. type
(a) 2
(b) 3
(c) 4
(d) 5

Q-10 Gun powder contain
(a) Nitre, Sulphar , charcoal
(b) Soda ash, NaCl
(c) HCl, NaSO4
(d) MgCl

Q-11 WASHING soda is
(a) Na2 CO3
(b) HQ
(c) H2SO4

Q-12 What is atomic mass of He?
(a) 4
(b) 5
(c) 6
(d) 7

Q-13 Isotope have
(a) Some atomic No. but different mass no.
(b) Some atomic No. & Same mass No.
(c) a and b
(c) None

Q-14 What is atomic mass of Fe?
(a) 54
(b) 55
(c) 56
(d) 55.8

Q-15 If atomic mass of oxygen is 16 amu. Then what will be its Gram atomic mass .
(a) 16g
(b) 32gm
(c) 63gm
(d) None

Q-16 6.023 × 1023 particle, it is
(a) Avogadro No.
(b) Whole No.
(c) Rational No.
(d) None

Q-17 At N.T.P. what will be its Molar Volume
(a) 22.4 litre
(b) 22.5
(c) 22.6
(d) None

Q-18 NH4+ is a
(a) Basic Radical
(b) Acid Radical
(c) Compound Radical
(d) None

Q-19 NO2– is a
(a) Acid Radical
(b) Basic Radical
(c) a and b
(d) None

Q-20 If in a reaction we have ↓
Then it means it is
(a) ppt
(b) Solid
(c) Gas
(d) None

Q-21 If in a reaction, There is a ↑, then it means it is
(a) gas
(b) Solid
(c) Liquid
(d) None

Q-22 In NaOH ® Na+ + OH– , the acidity is
(a) 1
(b) 2
(c) 3
(d) ½

Q-23 In HO ® H+ + Q–, then basicity is
(a) 2
(b) 1
(c) 3
(d) 4

Q-24 If N1V1 = N2V2 , then it is
(a) Normality equation
(b) Chemical equation
(c) Equation
(d) None

Q-25 Can we take all the digit in a Number as significant digit?
(a) No
(b) Yes
(c) a and b
(d) None

1. a
2. a
3. b
4. a
5. a
6. b
7. a
8. a
9. a
10. a
11. a
12. a
13. a
14. d
15. a
16. a
17. a
18. a
19. a
20. a
21. a
22. a
23. b
24. a
25. a

5 0.64 × 10-10 m
64/100 m
64 × 10-10 10-2 m
64 × 10-12 m

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