Question

Which of the following is a wrong statement? *



One mole of any gas at STP occupies 22.4L

One mole of O₂ gas contains 6.022 × 10²³ atoms of oxygen.

One mole of O₂ gas contains 6.022 × 10²³ molecules of oxygen.

Both atomic masses and molecular masses are calculated by comparing with the 12th part of C¹² isotope

Equivalent mass of H₂SO₄ is: *



196

98

49

24.5

The chemical formulla of Blue vitriol is: *



FeSO₄ . 7H₂O

Na₂S₂O₈

Na₂B₄O₇.10H₂O

CuSO₄.5H₂O

Which of the following sets of compounds correctly illustrate the law of reciprocal proportions? *



P₂O₃, PH₃, H₂O

P₂O₅, PH₃, H₂O

N₂O₅, NH₃, H₂O

N₂O, NH₃, H₂O

Mole fraction of methanol containing 1 mole of it in 3 moles of ethanol is? *


0.75

0.5

0.25

0.125​

Answer 1

Answer:

1 and 3 is false

1. 98

2. b option

3 2 option

4 0.5

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Answer 2

Answer:

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