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Which one of-the following salts when dissolved in water makes the solution basic?
A)
Sodium chloride
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B)
Copper sulphate
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C)
Ferric chloride
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D)
Sodium acetate
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Solution in test tubes containing \[{{H}_{2}}O\] and aqueous \[NaOH\] can be differentiated with the help of
A)
Red litmus
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B)
blue litmus
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C)
\[N{{a}_{2}}C{{O}_{3}}\]
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D)
\[HCI\] (aqueous)
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Which one among the following is not a property of salt?
A)
Salts have ordered packing arrangements called lattices
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B)
Salts have low melting points but high boiling points
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C)
Salts are brittle
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D)
Salts conducts electricity when dissolved in water or even in the molten state
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| Consider the following statements |
| 1. Limestone, chalk and marble are different forms of calcium carbonate |
| 2. When pH of rain water is less than 5.6, it is called acid rain. |
| 3. Human body works with in the pH range of 7.0 to 7.8 |
| Which of the statements given above are correct? |
A)
1 and 2
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B)
1 and 3
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C)
2 and 3
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D)
1, 2 and 3
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A milkman added a small amount of baking soda to fresh milk which had pH close to 6. As a result, pH of the medium
A)
Became close to 2
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B)
Became close to 4
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C)
Did not undergo any change
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D)
Became close to 8
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The compound used for neutralisation of excess \[HCI\] in the stomach is
A)
\[NaHC{{O}_{3}}\]
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B)
\[Mg{{(OH)}_{2}}\]
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C)
Both [a] and [b]
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D)
None of these
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The aqueous solution of which of the following salt will have \[OH-\] ions?
A)
\[NaCI\]
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B)
\[N{{a}_{2}}S{{O}_{4}}\]
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C)
\[C{{H}_{3}}COONa\]
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D)
None of these
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| Which of the following phenomenon occur when a small amount of acid is added to water? |
| (i) Ionisation |
| (ii) Dilution |
| (iii) Neutralisation |
| (iv) Salt formation |
A)
(i) and (ii)
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B)
(ii) and (iii)
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C)
(i) and (iii)
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D)
(ii) and (iv)
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Which of the following substances will not give carbon dioxide and treatment with dilute acid?
A)
Marble
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B)
Lime stone
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C)
Lime
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D)
Baking soda
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Identify the substance, having the property of deliquescence
A)
Gypsum
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B)
Hydrated calcium chloride
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C)
Quick lime
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D)
conc. sulphuric acid
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Which one of the following types of medicines is used for treating indigestion?
A)
Antibiotic
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B)
Antacid
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C)
Analagic
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D)
Antiseptic
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Soda acid fire extinguishes the fire by
A)
Cutting the supply of air
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B)
Raising ignition temperature
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C)
Removing combustion substance
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D)
None of these
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The formula of washing soda is
A)
\[NaHC{{O}_{3}}\]
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B)
\[N{{a}_{2}}C{{O}_{3}}.{{H}_{2}}O\]
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C)
\[N{{a}_{2}}C{{O}_{3}}\]
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D)
\[N{{a}_{2}}C{{O}_{3}}.10{{H}_{2}}O\]
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The substance which on treating with chlorine, yields] bleaching powder is
A)
Quick lime
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B)
lime stone
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C)
slaked lime
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D)
gypsum
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If tartaric acid is not added in baking powder, the cake will taste bitter due to the presence of
A)
Sodium hydrogen carbonate
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B)
Sodium carbonate
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C)
Carbon dioxide
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D)
Same unreacted tartaric acid
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Milk of magnesia is
A)
Solid magnesium oxide
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B)
Insoluble magnesium hydroxide
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C)
Soluble magnesium hydroxide
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D)
Insoluble magnesium carbonate
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Calcium phosphate is present in tooth enamel, its nature is
A)
Basic
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B)
amphoteric
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C)
Neutral
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D)
None of these
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Which of the following salts does not contain any water of crystallisation?
A)
Blue vitriol
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B)
Washing soda
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C)
Baking soda
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D)
Gypsum
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The role of quick lime in soda lime (mixture) is to
A)
Absorb moisture present in soda lime
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B)
Increase the efficiency of soda lime
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C)
Absorb moisture present in soda lime
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D)
Take part in reaction with\[NaOH\]
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Which of the following does not form an acid salt?
A)
Phosphoric acid
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B)
Carbonic acid
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C)
Hydrochloric acid
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D)
Sulphuric acid
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