Question

Q.1 A) Fill in the blanks by choosing the correct alternative.
(manure, propogation, involuntary, corrosion, alloys, voluntary, scattering of light)
1) A medium is necessary for
sound.
2) An iron article rust naturally which is called
3) Eyelids have
muscles.
4) Various shades of colour are seen in the sky at sunrise and sunset due to
5) Garbage is converted into
by micro-organisms.
6) The real test of a magnet is
B) Match the following.
(A)
1) Conversion of milk into yoghurt
2) Stretching of a spring
3) Pepsin
4) Infrasonic sound
[B]
(a) Enzyme of gastric juice
(b) Frequency less than 20 Hz
(c) Chemical change
(d) Physical change
(e) Frequency more than 20000 Hz
C) Name the following.
1) The cell that shows presence of nucleoid,
2) The changes that can occur in a forward and reverse direction again and again.
3) The large sac-like part of the alimentary canal.
4) The unit for measuring sound level.​

Answer 1

Answer:

Statement t A Victor Mayer tube' of hard glass, having

a side-tube, leading to the arrangement for collection of

displaced air over water.

Statement 2. An outer jacket of copper, containing a liquid

boiling at nearly 30C higher than the substance whose

molecular moss is to be determined

Statement 1 is True, Statement 2 is True; Statement 2

O

is correct explanation for Statement 1

Statement 1 is True, Statement 2 is True; Statement 2

is not correct explanation for Statement 1

Statement 1 is True, Statement 2 is False

Statement is False, Statement 2 is True