ACIDS BASES AND SALTS GRADE 7

Which of the following Statements are true about Acids ?

• They are sour in taste and soapy to touch

• They are sour in taste

• Acids are present in Oranges, Ant sting, Vinegar etc.

• Acids are present in Vinegar, Sugar, Soap etc.

A child got stung by a bee. Some of the Elders suggest to add Baking Soda or Lemon Juice. Which one do you think is Appropriate ?

• Lemon Juice

• Water

• Baking Soda

• None of the Above

Soap is an example of a ___ .

• acid
• base

Which of the following is an acid?

• soap

• baking soda

• orange juice

• pure water

What type of paper is used to test for acids and bases?

• Red paper

• Blue paper

• Lined paper

• Litmus paper

When the soil is too Basic, what do you add to neutralise the effect ?

• Basic Quicklime

• Phenolphthalein

• Organic Matter

• Nitric Acid

Tags

NGSS.MS-PS1-2

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

A child got stung by a bee. Some of the Elders suggest to add Baking Soda or Lemon Juice. Which one do you think is Appropriate ?

• Lemon Juice

• Water

• Baking Soda

• None of the Above

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

Tags

NGSS.MS-ESS3-3

When the pH Scale is on 5, the Nature of the substance is -

• Neutral

• Acidic

• Basic

• None of the Above