--> 1.The noble gas which is radio active:
(a) Krypton
(b) Argon
(c) Neon
(d) Radon
2.The name Hydrogen was given by:
(a) Priestly
(b) Cavendish
(c) Lavosler
(d) Humphrey Dewey
3.Which statement is not correct?
(a) Hygrogen is present in all acids
(b)Hydrogen is the only element without electron
(c) Hydrogen is the lightest gas
(d) Dueterium is known as heavy hydrogen
4.Malachite is the ore of:
(a) Copper ·
(b) Iron
(c) Manganese
(d) Aluminium
5.Second most abundant element in the earth’s crust;
(a) Silicon
(b) Copper
(c) Aluminium
(d) Gold
6.The most malleable and ductile pure metal:
(a) Copper
(b) Silver
(c) Gold
(d) iron
7.The Hnal stable product of uranium decay:
(a) Thorium
(b) Polonium
(c) Lead
(d) Neptunium
8.Aqua regia is a mixture of nitric acid and;
(a) Sulphuric acid
(b) Formic acid
(c) Hydrochloric acid
(d) Citric acid
9.The pH value of sea water:
(a) 7
(b) 6
(c) 8
(d) 9
10.The least electro negative element:
(a) Gallium
(b) Radon
(c) Caesium
(d) Neon
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(a) Krypton
(b) Argon
(c) Neon
(d) Radon
SHOW ANSWER
2.The name Hydrogen was given by:
(a) Priestly
(b) Cavendish
(c) Lavosler
(d) Humphrey Dewey
SHOW ANSWER
3.Which statement is not correct?
(a) Hygrogen is present in all acids
(b)Hydrogen is the only element without electron
(c) Hydrogen is the lightest gas
(d) Dueterium is known as heavy hydrogen
SHOW ANSWER
4.Malachite is the ore of:
(a) Copper ·
(b) Iron
(c) Manganese
(d) Aluminium
SHOW ANSWER
5.Second most abundant element in the earth’s crust;
(a) Silicon
(b) Copper
(c) Aluminium
(d) Gold
SHOW ANSWER
6.The most malleable and ductile pure metal:
(a) Copper
(b) Silver
(c) Gold
(d) iron
SHOW ANSWER
7.The Hnal stable product of uranium decay:
(a) Thorium
(b) Polonium
(c) Lead
(d) Neptunium
SHOW ANSWER
8.Aqua regia is a mixture of nitric acid and;
(a) Sulphuric acid
(b) Formic acid
(c) Hydrochloric acid
(d) Citric acid
SHOW ANSWER
9.The pH value of sea water:
(a) 7
(b) 6
(c) 8
(d) 9
SHOW ANSWER
10.The least electro negative element:
(a) Gallium
(b) Radon
(c) Caesium
(d) Neon
SHOW ANSWER
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Disclaimer: The author claims full ownership of all articles herein but doesn't claim ownership of all photos posted on this site. If the respective copyright owners wish for their photos to be taken down, feel free to e-mail me or leave a comment and these will be taken down immediately.
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