Acids, bases and salt

Fill in the blank:-

______________ turns colourless when added to an acid.

• Phenolphthalein

• Methyl orange

• Litmus paper

• All of these

Another example of Neutralization Reaction is...

• Using Magnesium Hydroxide (Milk of Magnesia) as an antacid to correct excess acidity in the stomach.

• Using Nitric acid to clean gold and silver ornaments.

• Both of them

Before Factory wastes are disposed out to Waterbodies, why do they add basic substances ?

• So that the Factory wastes decomposes in Waterbodies

• Because they have Respect towards them

• So that they do not harm the Aquatic animals and Plants

• None of the Above

Lakshmi is writing some statements about bases and indicators. Choose the correct statement and help her.

• Tooth decay is caused by the presence of a base.

• Indicator is a substance which shows different color in acidic and basic solution.

• Sodium Hydroxide turns blue Litmus red.

• All the above.

How does an Antacid help?

• To correct excess acidity in stomach.

• To neutralize acidity in soil.

• To neutralize the effect of a bee sting.

• It is harmful. It doesn't help in anything.

What are Bases?

• Bases are substances that are bitter in taste, feel soapy when touched and are acidic in nature.

• Bases are substances that are sour in taste, feel soapy when touched and are basic in nature.

• Bases are substances that are bitter in taste, feel soapy when touched and are basic in nature.

• Acids are substances that are bitter in taste, feel soapy when touched and are basic in nature.

Which of these taste sour?

• acids

• bases

• salts

• elements

Which one of these is an indicator?

• Litmus Paper

• Orange Juice

• Shampoo

• Lotion

When do you take an Antacid ?

• When you are Hungry

• When the soil is too Acidic

• When you have a Gastric problem in your stomach

• When the Factory wastes are disposed in waterbodies

• None of the Above

HCl + NaOH forms

• Sodium Acetate

• Sodium Chloride