Name the following

1. A metal below iron but above copper in the activity series of metals which has no reaction with water.

2. A metal which cannot be used for the preparation of hydrogen using dilute acids.

3. The salt formed when aluminium reacts with potassium Hydroxide, during the preparation of hydrogen from alkalis.

4. A gaseous reducing agent which is basic in nature

5. A compound formed between hydrogen and an element group 17[VIIA] - period 3.

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Solution

1)nickel
2)copper
3)potassium aluminate KAlO₂
4)Ammonia (NH3)
5)Hydrogen chloride, (HCl) or hydrochoric acid

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Similar questions

Give reason for the following

1. Nitric acid in the dilute form is not used in the laboratory preparation of hydrogen from metals.

2. Granulated zinc is preferred to metallic zinc in the preparation of hydrogen using dilute acid.

3. Hydrogen and alkali metals of group [1A] react with copper [II] oxide to give copper.

4. Hydrogen is collected by the downward displacement of water and not even though it is lighter than air.

5. A Mixture of hydrogen and chlorine can be separated by passage through a porous pot

From the metals: copper, iron,magnesium, sodium, and zinc, select a different metal in each case which:

(a) does not react with dilute hydrochloric acid,

(b) can form $2^{+}$ and $3^{+}$ ions,

(d) does not react with cold water but reacts with steam when heated.

(e) Arrange the above metals in their decreasing order of reactivity.

Q. From the metals-copper, iron, magnesium, sodium and zinc-select a different metal in each case which :
(a) does not react with dilute hydrochloric acid.
(b) can form 2⁺ and 3⁺ ions.
(c) has a hydroxide that reacts with both acids and alkalis.
(d) does not react with cold water, but reacts with steam when heated.

From the metals copper, iron, magnesium, sodium and zinc, select a different metal in each case which:
(i) does not react with dilute hydrochloric acid.
(ii) can form 2+ and 3+ ions.
(iii) has a hydroxide that reacts with both acids and alkalis.
(iv) does not react with cold water but reacts with steam when heated.
Arrange the metals in increasing order of reactivity.

Choose terms from the options given in brackets to complete these sentences.

(a) When CuO reacts with hydrogen, .............. is reduced and ............... is oxidized to .............. . $(C u O, H_{2}, C u, H_{2} O)$

(b) Hydrogen is ................ soluble in water. (Sparingly, highly, moderately)

(iron, magnesium, aluminium, sodium, calcium)

(d) Sodium .......... reacts smootly with cold water. (metal, amalgam, in the molten state)

(e) A metal ............. hydrogen in the activity series gives hydrogen with ............... acid or acid.

(above, below, dilute hydrochloric, concentrated hydrochloric, dilute sulphuric).

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1)nickel 2)copper 3)potassium aluminate KAlO₂ 4)Ammonia (NH3) 5)Hydrogen chloride, (HCl) or hydrochoric acid

1)nickel
2)copper
3)potassium aluminate KAlO₂
4)Ammonia (NH3)
5)Hydrogen chloride, (HCl) or hydrochoric acid