In the final answer of the expression (29.2 – 20.2) (1.79 x 10⁵) / 1.37. The number of significant figures is
Options
(a) 1 (b) 2 (c) 3 (d) 4
Correct Answer:
3
Explanation: […]
What is the maximum number of electrons that can be associated with the following set of quantum numbers? n=3, l=1 and m=–1
Options
(a) 6 (b) 4 (c) 2 (d) 10
Correct Answer: […]
0.45 g acid of molecular weight 90 was neutralise by 20 mL of 0.5 N KOH. The basicity of acid is
Options
(a) 2 (b) 4 (c) 1 (d) 3
Correct Answer:
2
Explanation: […]
Number of unpaired electrons in N2⁺ is
Options
(a) 2 (b) 0 (c) 1 (d) 3
Correct Answer:
1
Explanation:
N(7) = 1s²2s²2p² N2⁺ = 1s², 2s², 2p unpaired electrons =1
The number of nodal planes in pₓ is
Options
(a) 1 (b) 2 (c) 3 (d) 0
Correct Answer:
1
Explanation:
The number of nodal plane are present in a px is one […]
The following quantum numbers are possible for how many orbital(s) n= 3, l = 2, m = +2 ?
Options
(a) 1 (b) 3 (c) 2 (d) 4
Correct Answer:
1
Explanation:
No […]
One litre hard water contains 12 mg Mg²⁺. Milli equivalents of washing soda required to remove its hardness is
Options
(a) 1 (b) 12.16 (c) 1 x 10⁻³ (d) 12.16 x 10⁻³
Correct Answer: […]
The percentage weight of Zn in white vitriol [ZnSO₄ 7H₂O] is approximately equal to Zn=65, S=32, O=16 and H=1)
Options
(a) 33.65% (b) 32.56% (c) 23.65% (d) 22.65%
Correct Answer:
22.65%
Explanation:
Mol. […]
How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCl?
Options
(a) 0.044 (b) 0.333 (c) 0.011 (d) 0.029
Correct […]
1 Wb/m² equal to
Options
(a) 10⁴ G (b) 10² G (c) 10⁻² G (d) 10⁻⁴ G
Correct Answer:
10⁴ G
Explanation:
No explanation available. Be the first to write the explanation for […]
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