Question

(4) Penicillin
(d) Bite of female mosquito
(C) Distinguish between the following pairs :
(1) Animal cell and Plant cell.
(2) Mixtures and Compounds.
(8) Umbra and Penumbra.
Q. 3. Answer the following questions :
(1) Write the names of elements from the following symbols :
Zn, Cd, Xe, Br, Ti, Cu, Fe, Si, Ir, Pt.
(2) What is meant by surface activity? Name three chemicals responsible for the surface activity
of various detergents.
(3) What do we get from forests?
(4) What is meant by "The sun enters a nakshatra'. It is said that in the rainy season the sun
enters the Mrug nakshatra. What does it mean?
(5) What does the intensity of sound depend upon?
Q. 4. (A) Give scientific reasons for the following:
(1) The sounds generated by a tabla and a sitar are different.
(2) We should not observe the solar eclipse with naked eyes.
(3) Intoxicating substances should not be consumed.
(B) Sketch well labelled diagram: A prokaryotic cell.
(C) Write short notes on :
(1) Harmful effects of micro-organisms.
(2) Magnetic field.​

Answer 1

Answer:

I skipped my lunch because of burritos

I suffer from malaria because of mosquito