Question

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Section -B (Chemistry- Biology)
9. Give two examples for the organisms that do not require any special transport system inside them.
10. Name any two parts of the plant through which exchange of gases take place during respiration.
11. Name the components of stainless steel.
12. Write a word equation for the process that includes adding baking soda into the lime juice.
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13. Name a substance which can be purified by crystallization.
14. Dheeraj got cramps on the muscles. His father started massaging his legs. After this, Dheeraj got
relieved of the pain. Help Dheeraj to understand the following -
a. What is the reason for muscle cramp?
b. Why did the pain relieve after massaging?
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15. Sneha observes a brown powder layer formed on her bicycle chain made of iron.
She is wondering about the reason behind it. Help her by answering the bHow questions.
a. What is the reason for brown powder formed in the cycle chain?
b. Is it possible to protect the cycle chain from this? Mention the method.
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16. Give an example for the following
a
A chemical change that occurs by the action of heat
b. A physical change that occurs by the action of heat
A chemical change that produces smell.
OR
d physical change involving change in the size.
A chemical change that produces light.
f. A physical change that is observed in nature.​

Answer 1

Answer:

I am sorry sorry sorry mark me brinleyst

Answer 2

Answer:

please give me some thanks for my some answers