Given below are two statements: one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$
Assertion A : $$3.1500 \mathrm{~g}$$ of hydrated oxalic acid dissolved in water to make $$250.0 \mathrm{~mL}$$ solution will result in $$0.1 \mathrm{~M}$$ oxalic acid solution.
Reason $$\mathbf{R}$$ : Molar mass of hydrated oxalic acid is $$126 \mathrm{~g} \mathrm{~mol}^{-1}$$
In the light of the above statements, choose the correct answer from the options given below.
Match List I with List II
| List - I | List - II ($$\Delta_0$$) | ||
|---|---|---|---|
| A. | 16 g of $$\mathrm{CH_4~(g)}$$ | I. | Weighs 28 g |
| B. | 1 g of $$\mathrm{H_2~(g)}$$ | II. | $$60.2\times10^{23}$$ electrons |
| C. | 1 mole of $$\mathrm{N_2~(g)}$$ | III. | Weighs 32 g |
| D. | 0.5 mol of $$\mathrm{SO_2~(g)}$$ | IV. | Occupies 11.4 L volume of STP |
Choose the correct answer from the options given below:
The number of molecules and moles in 2.8375 litres of O$$_2$$ at STP are respectively
Which of the following have same number of significant figures?
A. 0.00253
B. 1.0003
C. 15.0
D. 163
Choose the correct answer from the options given below
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