| 1 |
Acidic Acid is used for |
Cleaning metal
Etching designs
Flavouring food
Making explosives
|
| 2 |
A base is a substance which neutralizes an acid. Which of these substances is not aa base. |
Aqueious ammonia
Calcium oxide
sodium Chloride
Sodium carbonate
|
| 3 |
When a chemical reaction is carried out with a substancZ; a gas is produced which turns red litmus paper blue. What is the reaction? |
Reaction of an acid with a meal carbonate
Reactin of an alkali with ammonium salt
Reaction of an acid with ammonium salt
None of these
|
| 4 |
Which of the following contains oxalic acid |
Orange
Sour Milk
Tomato
Tamarind
|
| 5 |
Which compound formed when SO2 is dissolved in water |
H2SO3
SO3
H2SO
H2S2O7
|
| 6 |
Which acid is used in he preparation of soaf. |
Oxalic Acid
Citric Acid
Stearic Acid
Tartaric Acid
|
| 7 |
In a neutralization reaction between KOH and H3PO4how many molecules of KOH will react with one molecule of H3PO4 |
1
2
3
4
|
| 8 |
How many hydroxide ions, calium hydroxide will release in water. |
2
1
3
zero
|
| 9 |
Predict themain characteristics of the reactions of metals with acids. |
Metals are dissolved
Hydrogen gas is envolved
Metals are coverted into salts
All the above mentioned characteristics are true
|
| 10 |
While baking which gas is responsible for raising the bread and making it soft? |
Oxygen
Carbon monoxide
Carbon di oxide
Nitrogen
|
| 11 |
Which acid is not used as a food or mixed with food? |
Tartaric Acid
Formic Acid
Ascorbic acid
Citric Acid
|
| 12 |
Which compound is used a thinner is paint industry? |
H2O
C2H3OH
CH3COOC2H5
CH3COOH
|
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