Question

answer me fast plzz of all the questions plzz frnds plz plz plz​

Answer 1

Answer:

5) option 1

convex lens of focal length 50 cm

6) option 3

calcium because it is in 4th period

7) option 4

all of the above

8) option 2

as ionic compound can't conduct electricity in solid form..

9)option 3

it is mainly caused by CFCs

10)option 2

as using thermal energy we heat up the coal and other which emit poisonous gases in environment. thus causes pollution

11) option 3

as the correct way of transferring electric impulse in neuron is started from dendrites then cell body then axon then nerve endings..

12)option 2

because in period elements have same number of shells..

hope this will help you

Answer 2

Answer:

5. ( i )

6. ( iii )

7. ( iv )

8. ( ii )

9. ( iii )

10. ( ii )

11. (iii )

12. ( ii )