Tissues — Science STD 9 — Question

Middle lamella is formed of:

Ultrasound is of frequency:

On listening to his friend, Amit said “Moon does not work as it goes round our earth”, because:
A: Moon displaces perpendicular to direction of force.
B: No force acts on the moon.
C: Momentum change is non-zero.
Which of the combination is/ are correct?

The properties of ultrasound that make it useful is/ are:

Female Anopheles mosquito is a carrier of a pathogen that causes:

1. Yellow fever.
2. Filariasis.
3. Malaria.
4. Dengue.

A mixture of two or more miscible liquids, for which the difference in the boiling points is less than 25 K can be separated by the process called:

Amoeba has a contractile vacuole for:

1. Osmoregulation.
2. Storage.
3. Turgidity.
4. Gaseous exchange.

When we talk of a force acting on a body, it usually means:

Which of the following is not an example of acceleration:

Daytime temperature of moon is:

1. 60°C
2. 70°C
3. 90°C
4. 110°C