Question

1. Write about the reaction of nitrogen with non metals.
2. What is global warming?
3. What is dry ice? What are its uses?
4. Mention any two physical properties of oxygen.
5. What is meant by rusting?
II. ANSWER IN DETAIL: (1×5=5)
1.What are the effects of acid rain? How can we prevent them?
*PART -B* *(BIOLOGY)* *MARKS:15*
I. ANSWER VERY BRIEFLY: (5×2=10)
1. What is cranium?
2. Why our backbone is slightly movable?
3. What is ligament?
4. Differentiate voluntary and involuntary muscle?
5. Name the different types of movable joints. Give one example for each type.
6.What are the functions of skeleton in human body?​

Answer 1

Answer:

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