Question

Q.1 - Choose the correct answer -
1. Numerical value of one mol:
A. 60.03 x 1023
B. 60.22 x 1022
C. 6.023 x 1023
D. 6.023 x 1021
2. Molar volume of one mole of a gas at NTP is:
A. 22.4
B. 224 liter
C. 0.224 Liter D. 2.4liter
3. Modern atomic mass is based on:
A. C-12
B. C-13
C. C-14
D.0-16
4. Which series of line spectrum of hydrogen atom is in visible region:
A. Lyman
B. Balmer
C. Paschenn D. Brackett
5. Be++ is iso electronic with which of the following:
A. H+
B. Lit
C. Nat
D. Mg2
6. Sp3 hybridization is found is which molecules:
A. Becl2
B. Becl3
C. CH4
D. SH6
7. which compound has coordinate bond:
A. Nabr
B. CH4 C. H20
D. H202
8. Variable valence is shown by :
A. Metallic elements B. Normal elements
c. Transition elements
D. Non-metallic elements
9. The number of unpaired elements in Fe+2 is
B. 2
A. 1
C. 3
D.4
10. Empirical formula of benzene is:
A. CH2
B. CH
C. CH20
D CH3​

Answer 1

Answer:

1) c..6.023×1023

2)a) 22.4

3) a) c-12

4) b) balmer

5) b) lit

6) c) ch4

7) b) ch 4

8)A. Metallic elements

9) b) 2

10) c) ch2o