Changes Around Us

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Question

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Question 1 :

Which changes can be reversed?

1. Bud to flower
2. Cow dung to biogas
3. Raw egg to boiled egg
4. Wet clothes to dry clothes
Answer
13344

Question 2 :

Which changes cannot be reversed?

1. Cold milk to hot milk
2. Milk to paneer
3. Yam to knitted sweater
4. Wet clothes to dry clothes
Answer
13345

Question 3 :

Metal rim is fixed to the wooden cart wheel by _____________

1. cooling metal rim
2. heating metal rim
3. cooling wooden wheel
4. heating wooden wheel
Answer
13346

Question 4 :

On heating metal rim _____________

1. contracts
2. expands
3. depends as the type of meted
4. depends how much it is heated
Answer
13347

Question 5 :

Which one of the steps while burning a candle is not reversible?

1. liquid wax changes into vapours
2. Melting of solid wax
3. Wax vapor bums into flame
4. All of these
Answer
13348