|
While playing in a park, a child was stung by a wasp
|
|
0
|
3480
|
March 23, 2018
|
|
Is the distilled water acidic/basic/neutral? How would you verify it?
|
|
0
|
595
|
March 23, 2018
|
|
Name the source from which litmus solution is obtained
|
|
0
|
4044
|
March 23, 2018
|
|
Look at the figures given below which shows solutions taken in test tubes A, B, C and D
|
|
0
|
1114
|
March 23, 2018
|
|
A metal carbonate X on reacting with an acid gives a gas which when passed
|
|
0
|
955
|
March 16, 2018
|
|
A sulphate salt of Group 2 element of the Periodic Table is a white
|
|
0
|
13630
|
March 16, 2018
|
|
Write the formulae of the salts given below
|
|
0
|
7493
|
March 16, 2018
|
|
In the following schematic diagram for the preparation of hydrogen gas as shown in figure,
|
|
0
|
1462
|
March 16, 2018
|
|
Give suitable reason for the following statements:
|
|
0
|
2369
|
March 16, 2018
|
|
What happens when dilute hydrochloric acid is added to the following and write balanced chemical equations
|
|
0
|
2013
|
March 16, 2018
|
|
What are strong and weak acids? In the following list of acids, separate strong acids
|
|
0
|
8246
|
March 16, 2018
|
|
Salt A commonly used in bakery products on heating gets converted into another salt
|
|
0
|
7032
|
March 16, 2018
|
|
What happens when nitric acid is added to an eggshell?
|
|
0
|
2326
|
March 16, 2018
|
|
When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved
|
|
0
|
1148
|
March 16, 2018
|
|
Name the products formed when sodium hydrogencarbonate is heated
|
|
0
|
6106
|
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:
|
|
0
|
2114
|
March 16, 2018
|
|
A salt X when dissolved in distilled water gives a clear solution which turns red litmus blue. - Explain this phenomenon
|
|
0
|
5186
|
March 16, 2018
|
|
. A compound which is prepared from gypsum has the property of hardening
|
|
0
|
7962
|
March 16, 2018
|
|
What is meant by water of crystallisation?
|
|
0
|
27287
|
March 16, 2018
|
|
Write the formula and chemical name of bleaching powder
|
|
0
|
1267
|
March 16, 2018
|
|
What happens when a cold and concentrated solution of sodium chloride reacts with ammonia and carbon dioxide?
|
|
0
|
6299
|
March 16, 2018
|
