Question
Setting of curd from milk is a chemical change. Explain.

Answer

Setting of curd from milk is a chemical change because new substances are formed and milk cannot be obtained again from curd.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

How can we compare the speeds of two objects to determine which one is moving faster?

A laboratory thermometer $A$ is kept $7\ cm$ away on the side of the flame while a similar thermometer $B$ is kept $7\ cm$ above the flame of a candle as shown in Figure.

Which of the thermometers, $A$ or $B$, will show a greater rise in temperature? Give reason for your answer.
Last Sunday, Pooja on her week off entered in her kitchen to cook rice for her family in lunch time. The moment she put fry pan on the gas stove and lighted it through the matchstick, all of sudden her $5$ years small daughter entered into the kitchen and tends to touch the hot fry pan. At the same time, Pooja saw her and pushed her away from the hot fry pan. In this way, she saved her child.
  1. Explain why do the fry pan are provided with the plastic handles?
  2. Mention the values represented by Pooja here towards her $5$ years small daughter.
Image
Fig. (a) Air is passed into lime water with a pichkari/syringe
(b) Air is exhaled into lime water
Observation: The lime water in test tube B turns milky as it receives exhaled air but the lime water in test tube A does not.
Name a few countries where tropical rain forests are present.
Why does an image in a plane mirror appear laterally inverted?
Paheli does not have a night lamp in her room. She covered the bulb of her room with a towel in the night to get dim light. Has she taken the right step? Give one reason to justify your answer.
What is a salt? Name any salt and give their formulae.
Mention the type of image
(i) which can be formed on the screen.
(i) which cannot be formed on the screen.
Why are forests called ‘green lungs’?