|
While playing in a park, a child was stung by a wasp
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0
|
3822
|
March 23, 2018
|
|
Is the distilled water acidic/basic/neutral? How would you verify it?
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0
|
887
|
March 23, 2018
|
|
Name the source from which litmus solution is obtained
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0
|
4243
|
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
|
1838
|
March 23, 2018
|
|
A metal carbonate X on reacting with an acid gives a gas which when passed
|
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0
|
1314
|
March 16, 2018
|
|
A sulphate salt of Group 2 element of the Periodic Table is a white
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0
|
14742
|
March 16, 2018
|
|
Write the formulae of the salts given below
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0
|
11354
|
March 16, 2018
|
|
In the following schematic diagram for the preparation of hydrogen gas as shown in figure,
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0
|
2092
|
March 16, 2018
|
|
Give suitable reason for the following statements:
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0
|
2807
|
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
|
|
0
|
8699
|
March 16, 2018
|
|
Salt A commonly used in bakery products on heating gets converted into another salt
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0
|
7295
|
March 16, 2018
|
|
What happens when nitric acid is added to an eggshell?
|
|
0
|
2573
|
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
|
1364
|
March 16, 2018
|
|
Name the products formed when sodium hydrogencarbonate is heated
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|
0
|
6374
|
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
|
2417
|
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
|
5819
|
March 16, 2018
|
|
. A compound which is prepared from gypsum has the property of hardening
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0
|
8346
|
March 16, 2018
|
|
What is meant by water of crystallisation?
|
|
0
|
30094
|
March 16, 2018
|
|
Write the formula and chemical name of bleaching powder
|
|
0
|
1564
|
March 16, 2018
|
|
What happens when a cold and concentrated solution of sodium chloride reacts with ammonia and carbon dioxide?
|
|
0
|
6710
|
March 16, 2018
|