MEDIUM
10th CBSE
IMPORTANT
Earn 100
An element is soft and can be cut with a knife. It is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be :
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Important Questions on Metals And Non-Metals
EASY
10th CBSE
IMPORTANT
Which of the following metal exists in the liquid state?
EASY
10th CBSE
IMPORTANT
Which of the following non-metal is a liquid?
MEDIUM
10th CBSE
IMPORTANT
Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions?
HARD
10th CBSE
IMPORTANT
An element forms an oxide . An aqueous solution of turns red litmus paper blue.
(a) What is the nature of the oxide ?
(b) State whether element is a metal or a non-metal.
(c) Give one example of an element like .
HARD
10th CBSE
IMPORTANT
Metal burns in air, on heating, to form an oxide whereas another metal burns in air only on strong heating to form an oxide . The two oxides and can react with hydrochloric acid as well as sodium hydroxide solution to form the corresponding salts and water.
(a) What is the nature of oxide ?
(b) What is the nature of oxide ?
(c) Name one metal like .
(d) Name one metal like .
HARD
10th CBSE
IMPORTANT
An element forms two oxides and . The oxide has no action on litmus solution but the oxide turns litmus solution red.
(a) What is the nature of oxide ?
(b) What is the nature of the oxide ?
(c) Would you call element a metal or a non-metal? Give a reason for your choice.
(d) Can you give an example of an element like ?
MEDIUM
10th CBSE
IMPORTANT
State and explain the reactions of gold with a solution of copper sulphate. If any?
MEDIUM
10th CBSE
IMPORTANT
State and explain the reactions, if any, copper with a solution of copper sulphate.
