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
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2 |
Lactic Acid is found in. |
Grapes
Tomatoes
Ant's sring
Yogurt
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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
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4 |
The king of chemiclas is |
KOH
HCl
NaCl
H2SO4
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5 |
Exothermic reaction ae those reactions durng which heat is. |
Given out
Remain same
Absorbed
Used
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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
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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
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8 |
Fire works is an example of ........... reactions. |
Addition
Exothermic
Endothermic
Decomposition
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9 |
Law of conservation of mass put forward in. |
1783
1784
1785
1786
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10 |
Law fo conservation of mass was put forward by |
Newton
Plank's
Lavoisier
Einstein
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