JEE Main 2021 (Online) 16th March Morning Shift | p-Block Elements Question 89 | Chemistry

JEE Main 2021 (Online) 16th March Morning Shift

MCQ (Single Correct Answer)

-1

A group of 15 element, which is a metal and forms a hydride with strongest reducing power among group 15 hydrides. The element is :

JEE Main 2021 (Online) 16th March Morning Shift

MCQ (Single Correct Answer)

-1

Match List - I with List - II :

	List - I Name of oxo acid		List - II Oxidation state of 'P'
(a)	Hypophosphorous acid	(i)	+5
(b)	Orthophosphoric acid	(ii)	+4
(c)	Hypophosphoric acid	(iii)	+3
(d)	Orthophosphorous acid	(iv)	+2
		(v)	+1

Choose the correct answer from the options given below :

(a) - (iv), (b) - (v), (c) - (ii), (d) - (iii)

(a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)

(a) - (v), (b) - (i), (c) - (ii), (d) - (iii)

(a) - (v), (b) - (iv), (c) - (ii), (d) - (iii)

JEE Main 2021 (Online) 26th February Evening Shift

MCQ (Single Correct Answer)

-1

Which pair of oxides is acidic in nature?

CaO, SiO₂

B₂O₃, CaO

B₂O₃, SiO₂

N₂O, BaO

JEE Main 2021 (Online) 26th February Morning Shift

MCQ (Single Correct Answer)

-1

Find A, B and C in the following reactions :

$$N{H_3} + A + C{O_2} \to {(N{H_4})_2}C{O_3}$$

$${(N{H_4})_2}C{O_3} + {H_2}O + B \to N{H_4}HC{O_3}$$

$$N{H_4}HC{O_3} + NaCl \to N{H_4}Cl + C$$

$$A - {O_2};B - C{O_2};C - N{a_2}C{O_3}$$

$$A - {H_2}O;B - {O_2};C - NaHC{O_3}$$

$$A - {H_2}O;B - {O_2};C - N{a_2}C{O_3}$$

$$A - {H_2}O;B - C{O_2};C - NaHC{O_3}$$

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