Science MCQs

Practice multiple choice questions with instant feedback. Select an option to see if you're correct.

Total Questions

2100

Page 129 of 210

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Question 1281 Medium

Why is sugar added in jam preparation?

To add color

To act as a preservative

To reduce acidity

To increase volume

Question 1282 Medium

What is the function of glycerin in sanitizer?

To kill germs

To add fragrance

To moisturize skin

To add color

Question 1283 Medium

Why are unripened mangoes dried in the sun for pickle?

To improve taste

To remove moisture

To add color

To soften them

Question 1284 Medium

Which ingredient gives flavour to onion pickle?

Sugar

Cinnamon sticks

Vinegar

Salt

Question 1285 Medium

What is the role of hydrogen peroxide in sanitizer?

To moisturize

To kill germs

To add fragrance

To thicken the mixture

Question 1286 Medium

Why is lemon juice added in apple jam?

To add sweetness

To act as a preservative

To change color

To reduce cooking time

Question 1287 Medium

How is the plastic bottle prepared for a drip system?

Cut the top

Make holes in the lid

Cut the bottom

Both B and C

Question 1288 Medium

Why are mango pieces kept in salt water overnight?

To add taste

To remove bitterness

To draw out moisture

To soften them

Question 1289 Medium

What is the purpose of keeping sliced onions in boiling water for a minute during pickle preparation?

To cook them completely

To make them softer and reduce sharpness

To change their color

To add a boiled flavor

Question 1290 Medium

What is the main function of the 'needle and valve' in the drip irrigation model?

To hang the bottle

To control the flow of water to the roots

To connect pipes together

To make holes in the bottle

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Total Questions 10900

easy 5797

medium 2983

hard 2120

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