Shubham Jha - Class 11 & 12
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Boron has two isotope 10B and 11B whose relative abundance are 20% and 80% respectively atomic weight of boron is
Anonymous Quiz
19%
10
36%
11
32%
11.5
14%
10.8
๐Ÿ‘5
An oxide of nitrogen contains 36.8% by weight of nitrogen the formula of the compund
Anonymous Quiz
14%
N20
44%
N2O3
16%
No
26%
NO2
๐Ÿคฉ4
An oxide of nitrogen has molecular weight 92 find the total no of electron in one gram mole of that oxide
Anonymous Quiz
14%
4.6n
49%
46 n
28%
23n
9%
2.3n
๐Ÿ‘4๐Ÿ˜3
The significant figures in 0.00051 are โ€”โ€”
Anonymous Quiz
26%
5
11%
4
11%
3
53%
2
๐Ÿ‘4
The number of significant figures in 6.02 x 1023 is 
Anonymous Quiz
19%
5
18%
4
47%
3
15%
2
๐Ÿ”ฅ1๐Ÿฅฐ1
The number of significant figures in 6.02 x 1023 is 
Anonymous Quiz
21%
Giga
25%
Zepto
22%
Exa
32%
None
๐Ÿ”ฅ2๐Ÿ‘1
Which among the following is the Supplementary Unitโ€”โ€”
Anonymous Quiz
9%
Mass
6%
Time
81%
Solid angle
5%
Distance
๐Ÿ‘3๐Ÿ˜1
The symbol to represent โ€œAmount of Substanceโ€ is
Anonymous Quiz
6%
K
12%
A
9%
C
73%
Mol
๐Ÿ‘7๐Ÿคฉ3๐Ÿ”ฅ2
๐Ÿ‘6๐Ÿ”ฅ6โค2๐Ÿคฉ2
๐Ÿ”ฅ6
๐Ÿ‘5๐Ÿ”ฅ3โค1
The displacement in metres of a body varies with time t in second as y = t2 โ€“ t โ€“ 2. The displacement is zero for a positive of t equal to
Anonymous Quiz
27%
1s
28%
3s
34%
2s
11%
4s
๐Ÿ‘2๐Ÿ˜1
The element with atomic number 35 belongs to
Anonymous Quiz
26%
D block
32%
S block
36%
P block
6%
F block
๐Ÿ”ฅ4
Which of the following properties generally decreases along a period?
Anonymous Quiz
12%
Ionisation energy
49%
Mettalic charchater
20%
Electron affinty
20%
Valency
๐Ÿฅฐ3