CURIOUSITY QUIZ: ACIDS, BASES AND SALTS

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Test Your knowledge on 'Acids, Bases and Salts' prepared exclusively according to the NCERT science curriculum for Class-7 . Attempt all the questions by clicking on the right option. Submit the completed Form by clicking the 'Submit' button at the end of the Form. Get your Score and the correct Answer by clicking the 'View score' button. Good Luck!

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When an ant bites, it injects an acidic liquid (formic acid) into our skin that causes irritation. The effect of the acid can be neutralized by rubbing calamine solution. What is the chemical present in calamine solution ?

1 point

Magnesium Hydroxide

Zinc Carbonate

Zinc Sulphate

Calcium Carbonate

Clear selection

What is the chemical reaction between an Acid and a Base called ? What are the products of this reaction ?

1 point

Neutralization Reaction ; Salt and Water

Neutralization Reaction ; Salt and Heat

Decomposition Reaction ; Salt, Water and Heat

Neutralization Reaction ; Salt, Water and Heat

Clear selection

When the soil becomes acidic due to acid rain, what is generally added to the soil to counteract this acidity?

1 point

Organic matter

Lime (Quicklime or Slaked Lime)

NPK Fertilizer

Boric acid

Clear selection

Which acid does our stomach secrete and, in case of excess secretion of acid causing stomach burn, what is the medicine generally given as an antacid to neutralize the acidity?

1 point

Citric Acid; Milk of Magnesia (respectively)

Hydrochloric Acid; Calamine solution (respectively)

Hydrochloric Acid; Milk of Magnesia (respectively)

Sulphuric acid Acid; Milk of Magnesia (respectively)

Clear selection

What are the tastes of Acids and Bases ?

1 point

Sour and Bitter (respectively)

Bitter and Sour (respectively)

Sweet and Sour (respectively)

Sour and Sweet (respectively)

Clear selection

The common laboratory chemical indicator 'Litmus' is generally produced from a :

1 point

Lichen

Algae

Fungus

Bacteria

Clear selection

What acids does Vinegar and Curd contain ?

1 point

Tartaric acid and Citric acid (respectively)

Lactic acid and Acetic acid (respectively)

Acetic acid and Lactic acid (respectively)

Citric acid and Lactic acid (respectively)

Clear selection

What is the colour of Phenolphthalein indicator in a neutral medium? What colour does it acquire in acidic and basic mediums respectively?

1 point

Pink (In acidic medium it is colourless ; in basic medium it is pink in colour)

Purple (In acidic medium it is colourless ; in basic medium it is pink in colour)

Colourless (In acidic medium it is colourless ; in basic medium it is pink in colour)

Colourless (In acidic medium it is pink ; in basic medium it is colourless)

Clear selection

Which famous historical monument in India is threatened due to to the acid rain ?

1 point

Qutab Minar

Konark Sun temple

Taj Mahal

Charminar

Clear selection

What are the gases primarily released from industries and automobiles that cause acid rain?

1 point

Carbon dioxide and Ozone

Sulphur dioxide and Ammonia

Methane and Nitrogen dioxide

Sulphur dioxide and Nitrogen dioxide

Clear selection

The building block of Proteins is basically an acid called:

1 point

Fatty acid

Amino acid

Deoxyribonucleic acid

Oxallic acid

Clear selection

Tooth decay or dental carries are caused when the bacteria break down the starchy food left over in our tooth surface and secretes a substance to dissolve the tooth enamel. What is that substance that dissolves the tooth enamel ?

1 point