The number of moles of KMnO₄ that will be needed to react with one mole of
The number of moles of KMnO₄ that will be needed to react with one mole of sulphite ion in acidic solution is
Options
(a) 4/5 (b) 2/5 (c) 1 (d) 3/5
Correct Answer:
2/5
Chemistry
The equivalent weight of phosphoric acid(H₃PO₄) in the reaction
The equivalent weight of phosphoric acid(H₃PO₄) in the reaction, NaOH + H₃PO₄ → NaH₂PO₄ + H₂O is
Options
(a) 59 (b) 49 (c) 25 (d) 98
Correct Answer:
98
Explanation:
NaOH + H₃PO₄ […]
What is the equivalent weight of SnCl₂ in the following reaction
What is the equivalent weight of SnCl₂ in the following reaction, SnCl₂+Cl₂→ SnCl₄?
Options
(a) 95 (b) 45 (c) 60 (d) 30
Correct Answer:
95
Explanation:
Equivalent weight of SnCl₂= mol. wt./2 = […]
0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc
0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc at STP. The molecular mass of R-OH will be
Options
(a) 47 (b) 79 (c) 77 (d) 74
The equivalent weight of H₃PO₂, when it disproportionates into PH₃ and H₃PO₃ is
The equivalent weight of H₃PO₂, when it disproportionates into PH₃ and H₃PO₃ is
Options
(a) 82 (b) 61.5 (c) 41 (d) 20.5
Correct Answer:
61.5
Explanation:
No explanation available. Be the first to […]
If the equivalent weight of an element is 32, then the percentage of oxygen
If the equivalent weight of an element is 32, then the percentage of oxygen in its oxide is
Options
(a) 16 (b) 40 (c) 32 (d) 20
Correct Answer:
20
Explanation:
Equi. Wt […]
The total number of atomic orbitals in fourth energy level of an atom is :
The total number of atomic orbitals in fourth energy level of an atom is :
Options
(a) 8 (b) 16 (c) 32 (d) 4
Correct Answer:
16
Explanation:
Total number of atomic orbits […]
The density of air is 0.001293 g/cc at STP. Its vapour density is
The density of air is 0.001293 g/cc at STP. Its vapour density is
Options
(a) 0.001293 (b) 8.2786 (c) 14.49 (d) 6.2706
Correct Answer:
14.49
Explanation:
At STP, 22.4 litres of gas is equal […]
Maximum number of electrons in a subshell with l=3 and n=4 is
Maximum number of electrons in a subshell with l=3 and n=4 is
Options
(a) 14 (b) 16 (c) 10 (d) 12
Correct Answer:
14
Explanation:
n = main energy level / = subshell […]
For azimuthal quantum number l= 3,the maximum number of electrons will be
For azimuthal quantum number l= 3,the maximum number of electrons will be
Options
(a) 2 (b) 6 (c) 0 (d) 14
Correct Answer:
14
Explanation:
l= 3 means f-subshell. Maximum no. of electrons […]