7th Sci: Acid-Base Yes/No Challenge

Yes or No

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Advanced Yes/No on acids, bases and pH

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Aashvi Gupta

United States

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7th Sci: Acid-Base Yes/No Challenge


7th Sci: Acid-Base Yes/No ChallengeOnline version Advanced Yes/No on acids, bases and pH by Aashvi Gupta 1 All salts formed by neutralisation are table salt. Yes No 2 Distilled water changes the colour of blue litmus paper. Yes No 3 Red litmus turns blue in every liquid. Yes No 4 Acids and bases react to form salt and water. Yes No 5 Turmeric changes colour in acidic solutions. Yes No 6 Hydrochloric acid helps digest food in our stomach. Yes No 7 Factory waste is often neutralised before being released into rivers. Yes No 8 Neutralisation is a physical change. Yes No 9 Lime is added to acidic soil to improve crop growth. Yes No 10 Pure water is acidic. Yes No 11 Soap solution turns blue litmus red. Yes No 12 Vinegar can help relieve a bee sting. Yes No 13 A basic solution can turn red litmus blue. Yes No 14 Every sour-tasting substance is an acid. Yes No 15 A solution with pH 2 is more acidic than one with pH 5. Yes No 16 Universal indicator can show different colours for different pH values. Yes No 17 Blue litmus can identify bases better than acids. Yes No 18 Mixing equal amounts of any acid and any base always gives a neutral solution. Yes No 19 During neutralisation, heat is usually produced. Yes No 20 Baking soda solution is acidic. Yes No 21 A bee sting is acidic. Yes No 22 Curd is acidic because of lactic acid. Yes No 23 Soap solution feels slippery because it is basic. Yes No 24 China rose indicator becomes green in basic solutions. Yes No 25 If both red and blue litmus show no colour change, the liquid may be neutral. Yes No 26 Milk is slightly acidic. Yes No 27 Factory waste is often neutralised before being released into rivers. Yes No 28 A neutral solution has neither acidic nor basic properties. Yes No 29 A student adds excess base after neutralisation. The final solution may become basic. Yes No 30 Universal indicator can show different colours for different pH values. Yes No 31 A solution that turns blue litmus red can never be basic. Yes No 32 A solution turning blue litmus red is likely to contain more H+ ions than OH- ions. Yes No 33 Orange juice is basic. Yes No 34 A neutral solution always has a pH of 5. Yes No 35 Toothpaste is generally basic in nature. Yes No 36 If phenolphthalein turns pink, the solution is basic. Yes No 37 Antacids contain mild bases. Yes No 38 Acid + Base -> Salt + Water represents a neutralisation reaction. Yes No 39 If turmeric paper turns reddish-brown, the solution could be an acid. Yes No 40 A base can neutralise an acid. Yes No 41 If both red and blue litmus show no colour change, the liquid may be neutral. Yes No 42 A solution turning blue litmus red is likely to contain more H+ ions than OH- ions. Yes No 43 Litmus is obtained from lichens. Yes No 44 All colourless liquids are neutral. Yes No 45 During neutralisation, heat is usually produced. Yes No 46 Acid rain improves soil fertility. Yes No 47 Adding vinegar to acidic soil makes it more suitable for farming. Yes No 48 Every liquid changes the colour of at least one indicator. Yes No 49 An indicator helps identify whether a solution is acidic, basic, or neutral. Yes No 50 Lime is added to acidic soil to improve crop growth. Yes No

7th Sci: Acid-Base Yes/No Challenge

Yes or No

About this activity

Created by

Download the paper version to play

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Yes or No

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7th Sci: Acid-Base Yes/No ChallengeOnline version

by Aashvi Gupta

All salts formed by neutralisation are table salt.

Distilled water changes the colour of blue litmus paper.

Red litmus turns blue in every liquid.

Acids and bases react to form salt and water.

Turmeric changes colour in acidic solutions.

Hydrochloric acid helps digest food in our stomach.

Factory waste is often neutralised before being released into rivers.

Neutralisation is a physical change.

Lime is added to acidic soil to improve crop growth.

Pure water is acidic.

Soap solution turns blue litmus red.

Vinegar can help relieve a bee sting.

A basic solution can turn red litmus blue.

Every sour-tasting substance is an acid.

A solution with pH 2 is more acidic than one with pH 5.

Universal indicator can show different colours for different pH values.

Blue litmus can identify bases better than acids.

Mixing equal amounts of any acid and any base always gives a neutral solution.

During neutralisation, heat is usually produced.

Baking soda solution is acidic.

A bee sting is acidic.

Curd is acidic because of lactic acid.

Soap solution feels slippery because it is basic.

China rose indicator becomes green in basic solutions.

If both red and blue litmus show no colour change, the liquid may be neutral.

Milk is slightly acidic.

Factory waste is often neutralised before being released into rivers.

A neutral solution has neither acidic nor basic properties.

A student adds excess base after neutralisation. The final solution may become basic.

Universal indicator can show different colours for different pH values.

A solution that turns blue litmus red can never be basic.

A solution turning blue litmus red is likely to contain more H+ ions than OH- ions.

Orange juice is basic.

A neutral solution always has a pH of 5.

Toothpaste is generally basic in nature.

If phenolphthalein turns pink, the solution is basic.

Antacids contain mild bases.

Acid + Base -> Salt + Water represents a neutralisation reaction.

If turmeric paper turns reddish-brown, the solution could be an acid.

A base can neutralise an acid.

If both red and blue litmus show no colour change, the liquid may be neutral.

A solution turning blue litmus red is likely to contain more H+ ions than OH- ions.

Litmus is obtained from lichens.

All colourless liquids are neutral.

During neutralisation, heat is usually produced.

Acid rain improves soil fertility.

Adding vinegar to acidic soil makes it more suitable for farming.

Every liquid changes the colour of at least one indicator.

An indicator helps identify whether a solution is acidic, basic, or neutral.

Lime is added to acidic soil to improve crop growth.