WB JEE 2019 | Some Basic Concepts of Chemistry Question 12 | Chemistry

WB JEE 2019

MCQ (Single Correct Answer)

-0.33

In the crystalline solid MSO₄ . nH₂O of molar mass 250 g mol^$$-$$1, the percentage of anhydrous salt is 64 by weight. The value of n is

WB JEE 2019

MCQ (Single Correct Answer)

-0.33

At S.T.P. the volume of 7.5 g of a gas is 5.6 L. The gas is

N₂O

CO₂

WB JEE 2018

MCQ (Single Correct Answer)

-0.33

How many moles of electrons will weigh one kilogram?

6.023 $$\times$$ 10²³

$${1 \over {9.108}} \times {10^{31}}$$

$${{6.023} \over {9.108}} \times {10^{54}}$$

$${1 \over {9.108 \times 6.023}} \times {10^8}$$

WB JEE 2018

MCQ (Single Correct Answer)

-0.5

A metal M (specific heat 0.16) forms a metal chloride with 65% chlorine present in it. The formula of the metal chloride will be

MCl

MCl₂

MCl₃

MCl₄

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