| 1 |
Sodium carbonate is an importnatsalt used for many purposes in indusies. Which acid is reacted with sodium hydroxide to get it. |
Oxalic acid
Citric acid
Acetic Acid
Carbonic acid
|
| 2 |
Lactic Acid is found in. |
Grapes
Tomatoes
Ant's sring
Yogurt
|
| 3 |
Sodium hydroxide solution in water will |
Turn blue litmus red
Give pink colour with phenolpthalein
Give red colour with methyl orange.
Not affect the phenolphthalein indicator
|
| 4 |
The king of chemiclas is |
KOH
HCl
NaCl
H2SO4
|
| 5 |
Exothermic reaction ae those reactions durng which heat is. |
Given out
Remain same
Absorbed
Used
|
| 6 |
The chemicla reaction during which a compound splits up into two or more simple substanes, is called. |
Additon reaction
Decomposition
Replacement reaction
Balanced reaction
|
| 7 |
During a chemical reaction, total mass of the product is equal to the total mass of reactants, this is a statements of. |
Law of conservation of momentum
Law of conservation of energy
Law of conseration of mass
Law of conseration of acceleration
|
| 8 |
Fire works is an example of ........... reactions. |
Addition
Exothermic
Endothermic
Decomposition
|
| 9 |
Law of conservation of mass put forward in. |
1783
1784
1785
1786
|
| 10 |
Law fo conservation of mass was put forward by |
Newton
Plank's
Lavoisier
Einstein
|
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