MEDIUM
8th Foundation
IMPORTANT
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Substance X reacts with dilute HCl violently, Y reacts slowly while Z does not react at all. X, Y and Z could be respectively

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Important Questions on Metals and Non-Metals

MEDIUM
8th Foundation
IMPORTANT
Which of the following reactions are possible?
(i) Mg+CuSO4MgSO4+Cu
(ii) Ca+MgSO4CaSO4+Mg
(iii) Cu+ZnSO4CuSO4+Zn
(iv) Fe+MgSO4FeSO4+Mg
EASY
8th Foundation
IMPORTANT

Match column I with column II and select the correct option from the given codes.

        Column I           Column II
(a) A non-metal, essential for respiration (i) Graphite
(b) A non-metal, the source of energy in Sun (ii) Silicon
(c) A non-metal, good conductor of electricity (iii) Oxygen
(d) A non-metal, used in semiconductors (iv) Hydrogen

 

EASY
8th Foundation
IMPORTANT
Which of the following statements is incorrect?
EASY
8th Foundation
IMPORTANT
What will happen if you keep a solution of copper sulphate in an iron container for a few days? What is the reason for your observation?
MEDIUM
8th Foundation
IMPORTANT
Kanika takes a burning substance and collects the evolved vapours in a test tube, making sure that they do not escape. A small amount of water is added to the test tube. To the solution obtained, a few drops of blue litmus solution are added. The litmus solution turns red. Which of the following could be the burning substance?
MEDIUM
8th Foundation
IMPORTANT

Vidisha placed a copper wire in silver nitrate solution as shown in the figure.

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Which of the following represents the correct observation?

MEDIUM
8th Foundation
IMPORTANT

Read the following statements carefully and identify X, Y and Z respectively.
(i) X is stored under kerosene.
(ii) Y catches fire on exposure to air and stored in water.
(iii) Z reacts with steam.                                                                                                           

MEDIUM
8th Foundation
IMPORTANT

Read the given statements and select the correct option.
Statement 1: Silver objects become green and lose their shine with the passage of time.
Statement 2: Silver reacts with carbon dioxide and moisture present in the atmosphere.