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CBSE
Class 11 Chemistry
Some Basic Concepts Of Chemistry
Quiz 1
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Approximate atomic weight of an element is If its equivalent weight is9, the exact atomic weight of element would be
0%
26. 89
0%
8. 9
0%
17. 8
0%
26. 7
Explanation
26. 7
The number of moles present in 6 gms of carbon is:
0%
2
0%
0. 5
0%
5
0%
1
Explanation
0. 5
What is the concentration of nitrate ions if equal volumes of1 M AgNO
0%
0. 1 N
0%
0. 2 M
0%
0. 05 M
0%
0. 25 M
Explanation
0. 2 M
The -ve charged particles is called:
0%
Anion
0%
Cation
0%
Radical
0%
Atom
Explanation
Anion
Which is not a unit of pressure:
0%
Bar
0%
N/m²
0%
Kg/m²
0%
Torr
Explanation
Kg/m²
What is the normality of a 1 M solution of H
0%
0. 5 N
0%
1. 0 N
0%
2. 0 N
0%
3. 0 N
Explanation
3. 0 N
The total number of ions present in 111 g of CaCl
0%
One Mole
0%
Two Mole
0%
Three Mole
0%
Four Mole
Explanation
Three Mole
Which of the following weighs the most?
0%
One g – atom of nitrogen
0%
One mole of water
0%
One mole of sodium
0%
One molecule of H
Explanation
One mole of sodium
Under similar conditions of pressure and temperature, 40 ml of slightly moist hydrogen chloride gas is mixed with 20 ml of ammonia gas, the final volume of gas at the same temperature and pressure will be
0%
100 ml
0%
20 ml
0%
40 ml
0%
60 ml
Explanation
20 ml
Which of the following cannot give iodometric titrations
0%
Fe
0%
Cu
0%
Pb
0%
Ag
Explanation
Pb
What is the concentration of nitrate ions if equal volumes of1 MAgNO
0%
0. 1 M
0%
0. 2 M
0%
0. 05 M
0%
0. 25 M
Explanation
0. 05 M
Which of the following contains same number of carbon atoms as are in0 g of carbon (C – 12)?
0%
6. 0 g Ethane
0%
8. 0 g Methane
0%
21. 0 g Propane
0%
28. 0 g CO
Explanation
8. 0 g Methane
The significant figures in 3400 are
0%
2
0%
5
0%
6
0%
4
Explanation
5
A symbol not only represents the name of the element but also represents
0%
Atomic Mass
0%
Atomic Number
0%
Atomicity
0%
Atomic Volume
Explanation
Atomicity
The sulphate of a metal M contains87% of M. This sulphate is isomorphous with ZnSO. 7H O. The atomic weight of M is
0%
40. 3
0%
36. 3
0%
24. 3
0%
11. 3
Explanation
24. 3
The S. I unit of temperature is :
0%
Kelvin
0%
Celsius
0%
Fahrenheit
0%
Centigrade
Explanation
Kelvin
An organic compound contains carbon , hydrogen and oxygen. Its elemental analysis gave C,71% and H,67%. The empirical formula of the compound would be
0%
CHO
0%
CH
0%
(i) and (ii)
0%
None of the above
Explanation
CH
0 h : 0 m : 1 s
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