|
While playing in a park, a child was stung by a wasp
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0
|
3755
|
March 23, 2018
|
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Is the distilled water acidic/basic/neutral? How would you verify it?
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0
|
855
|
March 23, 2018
|
|
Name the source from which litmus solution is obtained
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0
|
4235
|
March 23, 2018
|
|
Look at the figures given below which shows solutions taken in test tubes A, B, C and D
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0
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1796
|
March 23, 2018
|
|
A metal carbonate X on reacting with an acid gives a gas which when passed
|
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0
|
1298
|
March 16, 2018
|
|
A sulphate salt of Group 2 element of the Periodic Table is a white
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0
|
14726
|
March 16, 2018
|
|
Write the formulae of the salts given below
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0
|
11110
|
March 16, 2018
|
|
In the following schematic diagram for the preparation of hydrogen gas as shown in figure,
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0
|
2063
|
March 16, 2018
|
|
Give suitable reason for the following statements:
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0
|
2794
|
March 16, 2018
|
|
What happens when dilute hydrochloric acid is added to the following and write balanced chemical equations
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0
|
2315
|
March 16, 2018
|
|
What are strong and weak acids? In the following list of acids, separate strong acids
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|
0
|
8697
|
March 16, 2018
|
|
Salt A commonly used in bakery products on heating gets converted into another salt
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0
|
7292
|
March 16, 2018
|
|
What happens when nitric acid is added to an eggshell?
|
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0
|
2572
|
March 16, 2018
|
|
When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved
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|
0
|
1358
|
March 16, 2018
|
|
Name the products formed when sodium hydrogencarbonate is heated
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0
|
6373
|
March 16, 2018
|
|
To the three solutions listed below, a few drops of phenolphthalein and blue litmus were added separately. Specify the colour change in each case, if any:
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0
|
2411
|
March 16, 2018
|
|
A salt X when dissolved in distilled water gives a clear solution which turns red litmus blue. - Explain this phenomenon
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0
|
5776
|
March 16, 2018
|
|
. A compound which is prepared from gypsum has the property of hardening
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0
|
8339
|
March 16, 2018
|
|
What is meant by water of crystallisation?
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0
|
30035
|
March 16, 2018
|
|
Write the formula and chemical name of bleaching powder
|
|
0
|
1559
|
March 16, 2018
|
|
What happens when a cold and concentrated solution of sodium chloride reacts with ammonia and carbon dioxide?
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|
0
|
6709
|
March 16, 2018
|