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| 1. |
Whether a substance is Acidic or Basic in nature can be tested by
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Thermometer
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Acid Base Indicator
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Voltmeter
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Altimeter
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Answer : Acid Base Indicator
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| 2. |
Following can be used to test the acidic & basic nature of substances
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Litmus
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Litmus, China Rose
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Litmus, China Rose, Turmeric, Red Cabbage Juice
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China Rose, Salt, Mercury
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Answer : Litmus, China Rose, Turmeric, Red Cabbage Juice
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| 3. |
Litmus turns __________ in acidic & _________ in basic solution
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Blue, Red
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Blue, Green
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Red, Blue
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Red, Green
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Answer : Red, Blue
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| 4. |
A neutral substance is neither acidic nor basic. However Litmus Paper colour changes in a neutral substance.
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Red to Blue
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Blue to Red
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No Change of colour
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Green to Blue
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Answer : No Change of colour
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| 5. |
Red Cabbage Juice , purple in colour, turns _______ in acidic & ________ in basic solution.
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Blue, Red
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Blue, Yellow
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Green, Red
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Red, Green
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Answer : Red, Green
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| 6. |
________ turn Turmeric Juice ( Yellow in Colour ) to reddish brown & remains yellow in _____________.
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Bases, Acidic/Neutral
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Acidic, Bases
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Bases, Acidic
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Bases, Bases
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Answer : Bases, Acidic/Neutral
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| 7. |
Antacid, Toothpaste, Soap solution, Whitewash are ________ in nature
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Acidic
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Basic
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Neutral
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All of above
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Answer : Basic
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| 8. |
Yoghurt, Vinegar, Orange Juice, Vitamin C, Fizzy drinks are ________ in nature
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Acidic
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Basic
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Neutral
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All of Above
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Answer : Acidic
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| 9. |
Acids are formed by Oxides of Nonmetals in ___________.
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Air
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Water
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Base
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Milk
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Answer : Water
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| 10. |
General charateristics of acids is
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Sour Taste
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Turn Blue litmus into Red
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Form salt with metals & lberate carbondioxide on reaction with Carbonates
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All of above
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Answer : All of above
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| 11. |
Marble in house is known as
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Sodium Carbonate
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Calsium Sulphate
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Calcium Carbonate
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Sodium Citrate
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Answer : Calcium Carbonate
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| 12. |
Hydrochloric acid is used in _______________
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Leather Tanning, Dyeing & Textile Industry
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Explosive Industry
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Falvouring Agent
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Storage Batteries
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Answer : Leather Tanning, Dyeing & Textile Industry
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| 13. |
Nitric Acid is used
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Leather Industry
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Explosive & Fertiliser
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Storage Batteries
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Food Industry
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Answer : Explosive & Fertiliser
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| 14. |
Sulphuric acid is used in
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Food perservative
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Bathroom cleaning
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Dyes & Drugs
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Storage Batteries
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Answer : Storage Batteries
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| 15. |
Phenolphthalein ( Colourless ) turns Pink in _________ solutions & is colourless in ________________ solution.
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Basic, Acidic
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Basic, Neutral
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Basic, Acidic/Neutral
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Acidic, Basic
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Answer : Basic, Acidic/Neutral
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| 16. |
China Rose Juice turns Green in ____________ & ___________ in acidic solution
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Acidic, Basic
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Basic, Acidic
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Basic, Neutral
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Acidic, Neutral
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Answer : Basic, Acidic
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| 17. |
Hydrochloric, Sulphuric & Nitric acids are known as
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Natural Acids
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Mild Acids
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Mineral Acids
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Small Acids
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Answer : Mineral Acids
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| 18. |
A solution is said to be _________________ if it conatins _________ amount of acid.
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Concentrated, Small
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Diluted, Large
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Concentrated, Large
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Diluted, Medium
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Answer : Concentrated, Large
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| 19. |
Acidic gases are mostly ( Except Carbondioxide) _____________ in water.
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Soluble
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Insoluble
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Both of above
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None of Above
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Answer : Soluble
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| 20. |
Pickles & Vinegars are not stored in Metallic containers because
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These corrode Metal
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These react with Metals
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Both of above
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None of Above
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Answer : Both of above
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| 21. |
Baking Powder is known as
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Sodium Bicarbonate
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Calcium Carbonate
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Sodium Hydroxide
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Magnesium Oxide
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Answer : Sodium Bicarbonate
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| 22. |
Ascorbic, Citric, Acetic & Tartaric Acids are known as
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Natural Acids
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Answer : Natural Acids
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| 23. |
Lemon juice causes effervescence with baking powder because it releases
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Oxygen
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Hydrogen
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Nitrogen
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Carbondioxide
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Answer : Carbondioxide
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