Acids, Bases and Salts

Total Questions: 16

1 - Sodium hydroxide solution in water will:
A ) Turn blue litmus red
B ) Give pink color with phenolpthalein ✅
C ) Give red colour with methyl orange
D ) Not effect the phenolpthalein indicator

2 - Lactic acid is found in:
A ) Grapes
B ) Tomatoes
C ) Ant's sring
D ) Yogurt ✅

3 - Sodium carbonate is an important salt used for many purposes in industries which acid is reacted with sodium hydroxide to get it ?
A ) Oxalic acid
B ) Citric acid
C ) Carbonic acid ✅
D ) Acetic acid

4 - Which statement is true?
A ) About three million compounds are known to the scientist ✅
B ) About four million compounds are known to the scientist
C ) About two million compounds are known to the scientist
D ) About five million compounds are known to the scientist

5 - The word acid is derived from:
A ) Arabic word
B ) English word
C ) Latin word ✅
D ) Greek word

6 - Tartaric acid obtain from:
A ) Fats
B ) Tarmarind, grapes ✅
C ) Apple
D ) Citrus fruits

7 - All acids have a taste:
A ) Sour ✅
B ) Sweet
C ) Bitter
D ) Salty

8 - Asid used as a dehydrating agent:
A ) Sulphuric acid ✅
B ) Nitric acid
C ) Hydrochloric acid
D ) Phosphoric acid

9 - The word alkaline has been taken from:
A ) Greek
B ) Latin ✅
C ) Arabic
D ) English

10 - Base has a ____touch.
A ) Soapy ✅
B ) Hard
C ) Soury
D ) Smooth

11 - Bases react with acids to form water and ____.
A ) Salt ✅
B ) Hydrogen ions
C ) Hydroxide ions
D ) Ammonia

12 - A large variety of compounds exists are:
A ) Acids
B ) Bases
C ) Alkalis
D ) Salt ✅

13 - These salts are responsible for preventing heart attacks:
A ) Salts of calcium ✅
B ) Salts of sodium
C ) Salts of potassium
D ) Salts of magnesium

14 - Strong alkalis have pH value:
A ) 3 to 7
B ) 1 to 2
C ) 7 to 13
D ) 13 to 14 ✅

15 - pH value of milk of magnesia:
A ) 7
B ) 11 ✅
C ) 9
D ) 14

16 - In dilute HCI blue litmus turns:
A ) Orange
B ) Pink
C ) Red ✅
D ) Yellow
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