1
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Arrange the following in order of increasing mass
I. 1 mole of N$$_2$$
II. 0.5 mole of O$$_3$$
III. $$3.011\times10^{23}$$ molecules of O$$_2$$
IV. 0.5 gram atom of O$$_2$$
2
WB JEE 2023
MCQ (Single Correct Answer)
+2
-0.5
63 g of a compound (Mol. Wt. = 126) was dissolved in 500 g distilled water. The density of the resultant solution as 1.126 g/ml. The molarity of the solution is
3
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
How much solid oxalic acid (Molecular weight 126) has to be weighed to prepare 100 ml. exactly 0.1 (N) oxalic acid solution in water?
4
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
$${C_6}{H_6}(liq) + {{15} \over 2}{O_2}(g) \to 6C{O_2}(g) + 3{H_2}O(liq)$$
Benzene burns in oxygen according to the above equation. What is the volume of oxygen (at STP) needed for complete combustion of 39 gram of liquid benzene?
Questions Asked from Some Basic Concepts of Chemistry (MCQ (Single Correct Answer))
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