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Reaction of Metals with Acid

3. Why Boron ...

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3. Why Boron (B) not reacts with any dil. acid like dil. HCl , dil. H2SO4 , dil. HNO3 whereas. B reacts with Conc. HNO3 and Conc. H2SO4 ??

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H_{2}

gas is not obtained when zinc reacts with conc.

H_{2} S O_{4}

P b

reacts with dil.

H N O_{3}

Q. Zinc reacts with dil.

H_{2} S O_{4}

H_{2}

. It also reacts with conc.

H_{2} S O_{4}

S O_{2}

If true enter 1, else enter 0.

Q. Complete and balance the following reactions: [4 MARKS]
(a)

K C l + H_{2} S O_{4} (c o n c .) \to

C u + H C l (d i l .) \to

C u O + H C l (d i l .) \to

C u O + [O] H C l (c o n c .) \to

Q. Name a metal that does not react with dil.

H C l

H_{2} S O_{4}

.

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