EASY
7th CBSE
IMPORTANT
Earn 100
The elements present in starch are
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Important Questions on Chemistry in Daily Life
EASY
7th CBSE
IMPORTANT
Pick out the correct statement(s) among the following.
EASY
7th CBSE
IMPORTANT
Arrange the given compounds in the increasing order of carbon atoms present in the following compounds:
(1) Methane.
(2) Sugar.
(3) Glucose.
(4) Starch.
EASY
7th CBSE
IMPORTANT
Which of the following gases is the most unsuitable for filling up weather-observation balloons?
EASY
7th CBSE
IMPORTANT
Match the following:
| Column A | Column B |
| A. Hydrochloric acid | a. Sprayed over grape vines |
| B. Hydrated copper sulphate | b. Flooring, statues and monuments |
| C. Limestone | c. Manufacture of paints |
| D. Zincite | d. Reduces the acidity of the soil |
| e. Bathroom cleaning agent |
EASY
7th CBSE
IMPORTANT
Which of the following compounds/alloys of silicon is used in grinding wheel and which property of that substance is exploited?
EASY
7th CBSE
IMPORTANT
Which of the following is a thermosetting plastic?
EASY
7th CBSE
IMPORTANT
Arrange the relevant steps in correct sequence for the manufacture of sodium chloride from seawater:
(1) Making of hot saturated solution.
(2) Evaporation.
(3) Recrystallisation.
(4) Collection of seawater.
(5) Addition of small quantity of sodium iodide or potassium iodide.
EASY
7th CBSE
IMPORTANT
Which of the following noble gases cannot be used for filling up electric bulbs?
