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Science 8th Class English Medium Chapter 7 Online Test MCQs With Answers
Question # 1
Acid used as a dehydrating agent.
Choose an answer
Nitric Acid
Phosphoric acid
Sulphuric acid
Hydrochloric acid
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Question # 2
Sodium hydroxide solution in water will
Choose an answer
Turn blue litmus red
Give pink colour with phenolpthalein
Give red colour with methyl orange.
Not affect the phenolphthalein indicator
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Question # 3
Base has a............. touch
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Soapy
Hard
Soury
Smooth
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Question # 4
The word alkaline has been taken form.
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Greek
Latin
Arabic
English
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Question # 5
pH value of milk of magnesia.
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7
11
9
14
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Question # 6
Strong alkalis have pH value.
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3 to 7
1 to 2
7 to 13
13 to 14
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Question # 7
Bases react with acids to form water and........
Choose an answer
Hydrogen ions
Ammonia
Salt
Hydroxide ions
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Question # 8
Sodium carbonate is an importnatsalt used for many purposes in indusies. Which acid is reacted with sodium hydroxide to get it.
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Oxalic acid
Citric acid
Acetic Acid
Carbonic acid
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Question # 9
Tartaric acid obtain form.
Choose an answer
Fats
Tarmarind , grapes
Apples
Citrus fruits
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Question # 10
Large variey of compounds exists are.
Choose an answer
Acids
Bases
Alkalies
Salt
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Question # 11
Lactic Acid is found in.
Choose an answer
Grapes
Tomatoes
Ant's sring
Yogurt
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Question # 12
All acids have a taste.
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Sweet
Sour
Bitter
Salty
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Question # 13
These salts are responsible for preventing heart attacks.
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Salts of sodium
Salts of calcium
Salt of potassium
Salt of Magnesium
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Question # 14
The king of chemiclas is
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KOH
HCl
NaCl
H2SO4
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Question # 15
The word acid is derived form.
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Arabic word
English word
Latin word
Greek word
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Question # 16
In dilute HCl blue litmus turns.
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Orange
Yellow
Red
Pink
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