Acid Bases and Salts class 7

Are you playing this quiz honestly?

(Tell the truth, you will get marks!)

Name the acid present in your stomach

• 
• Formic Acid

• Hydrochloric Acid

• 

Tags

NGSS.MS-PS1-5

Which of the following is true?

• Litmus paper turns blue in acidic and red in basic

• Litmus paper turns red in acidic and blue in basic

• Litmus paper does not change colour

• None of these

According to you, will you get 100% marks in the quiz?

(This question causes no changes in your marks!)

• Yes, of course!

• No, I think

Select od one out

• Phenolphthalein

• Hibiscus

• Litmus

• Turmeric

Which one of the following is correct property of turmeric indicator

• It turns blue in acidic and red in basic

• It turns red in acidic and blue in basic

• It remains colourless in acidic and red in basic

• It changes to green in all cases (acidic, basic or neutral)

Acids present in Lemon, Spinach and Tamarind are

• Formic acid

• Oxalic acid

• Ascorbic acid

• Citric acid

• Tartaric acid

Choose the correct answer for chemical equation on acid-base reaction

• Acid + Base gives Salt + Water

• Acid + Base gives neutral solution

• HCL + (NaOH) gives (NaCl) + H2O

• None of them

What do we do when an ant bites us?

• Apply citric acid

• Apply moist baking soda

• Apply neutral solution

• Apply formic acid

Tooth decay is cause by the presence of a base. (True or False)

• True

• False

Tags

NGSS.MS-PS1-2