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Exploring the Power of Hydrogen: Part 1

Updated: Feb 21

Tick (✔) The correct choice amongest the following

1. The valency of hydrogen is :(a) 1(b) 2(c) 0(d) 3


2. The metals which can be used for producing hydrogen gas by reacting them with cold water are :(a) Na, Mg, Mn(b) Na, K, Ca(c) K, Al, Ca(d) K, Zn, Al


3. The metals which can be used for producing hydrogen gas by reacting them with steam are :(a) Mg, Na, Zn(b) Mg, Zn, Fe(c) Mg, Cd, Sn(d) Zn, Sn, Cu


4. The main component of natural gas is :(a) Methane(b) Hydrogen(c) Hydrogen and methane both(d) Nitrogen and oxygen only


5. The metals which form ionic hydrides are :(a) Li, Na, Zn(b) Li, Na, Ca(c) Na, Cu, Al(d) Zn, Mg, Al


Fill in The Blanks

1. .................... named the gas hydrogen.


2. Hydrogen was discovered by .................... in 1766.


3. Hydrogen gas is prepared by the action of dil. H2SO4 on .................... .


4. The melting point of hydrogen is .................... and boiling point is .................... .


5. .................... zinc contains copper as impurity.


Write True or False for each statment.Rewrite the Statement Correctly





1. Hydrogen is a colourless, odourless and tasteless gas.


2. Hydrogen is neither combustible nor a supporter of combustion.


3. Hydrogen is absorbed by heated palladium.


4. Hydrogen is heavier than air and readily soluble in water.


5. Hydrogen is used for welding purposes in the form of oxy-hydrogen flame.


Match The Columns

1. 1.Henry Cavendish2.Shine of Sun3.Oxy-hydrogen flame4.Lavoisier WeldingNamed hydrogenHydrogenDiscovered hydrogen

 Mark(s)

Give one Word for The Followings





1. Flame used for welding purpose.


2. Process used for manufacturing ammonia.


3. Substance used to adsorb hydrogen.


4. Colour of flame produced when hydrogen is burnt.

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