Hydrogen and It's Compounds · Chemistry · AP EAPCET

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MCQ (Single Correct Answer)

1

In which of the following reactions, hydrogen is oned the products?

I. $\mathrm{NaBH}_4+\mathrm{I}_2 \longrightarrow$

II. $\mathrm{BF}_3+\mathrm{NaH} \xrightarrow{450 \mathrm{~K}}$

III. $\mathrm{BF}_3+\mathrm{LiAlH}_4 \longrightarrow$

IV. $\mathrm{B}_2 \mathrm{H}_6+\mathrm{NH}_3 \xrightarrow{\text { heat }}$

AP EAPCET 2024 - 22th May Evening Shift
2
Identify the incorrect statement.
AP EAPCET 2024 - 22th May Morning Shift
3
The method for preparation of water gas is
AP EAPCET 2024 - 21th May Morning Shift
4
The major products $X$ and $Y$ respectively from the following reactions are AP EAPCET 2024 - 21th May Morning Shift Chemistry - Hydrogen and It's Compounds Question 3 English
AP EAPCET 2024 - 21th May Morning Shift
5
The hydrides of which group elements are examples of electron precise hydrides?
AP EAPCET 2024 - 20th May Evening Shift
6

The correct statements among the following are

(i) saline hydrides produce $\mathrm{H}_2$ gas when reacted with water

(ii) presently $\sim 77 \%$ of the industrial dihydrogen is produced from coal

(iii) commercially marketed $\mathrm{H}_2 \mathrm{O}_2$ contains $3 \% \mathrm{H}_2 \mathrm{O}_2$

AP EAPCET 2024 - 19th May Evening Shift
7

Two statements are given below :

I. In dry cleaning, the solvent $\mathrm{Cl}_2 \mathrm{C}=\mathrm{CCl}_2$ was earlier used and now it is replaced by liquefied $\mathrm{CO}_2$

II. In bleaching of paper, $\mathrm{H}_2 \mathrm{O}_2$ was used earlier and now it is replaced by chlorine gas. Correct anwer is

AP EAPCET 2024 - 19th May Evening Shift
8
In which of the following reaction, dilhydrogen is not evolved?
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9

Calcium carbide $$+\mathrm{D}_2 \mathrm{O} \longrightarrow \underline{X}+\mathrm{Ca}(\mathrm{OD})_2$$. The hybridisation of carbon atom(s) in $$X$$

AP EAPCET 2022 - 5th July Morning Shift
10

What are $$X$$ and $$Y$$ respectively in the following reactions?

$$\begin{aligned} & \underline{X}+D_2 \mathrm{O} \longrightarrow C_2 D_2+P \\ & \underline{Y}+D_2 \mathrm{O} \longrightarrow C D_4+Q \end{aligned}$$

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