Atoms and Molecules — Science STD 9 — Question

A body moving along a circular path will have:

Which of the following is/ are a type of homogenous mixture:

Collenchyma mainly forms __________.

The latent heat of fusion of ice is:

1. 3.34 × 10⁵J/ kg
2. 22.5 × 10⁵J/ kg
3. 3.34 × 10⁴J/ kg
4. 22.5 × 10⁴J/ kg

Lateral line sense organs occur in:

1. Fishes.
2. Amphibian larva.
3. Reptiles.
4. Both (a) and (b).

Heat Energy is called:

Loudness of sound increases with:

A satellite is launched in a circular orbit of radius R. Another satellite is also launched in an orbit of radius 1.1R. The period of the second satellite is larger than the first by approximately.

What is the mass number of ₁₇​C1³⁵ ?

Which of the following is non-communicable disease?

1. Allergy.
2. Malaria.
3. Diarrhea.
4. Tuberculosis.