Improvement in Food Resources — Science STD 9 — Question

A person met with an accident in which two long bones of hand were dislocated. Which among the following may be the possible reason?

Major component of the atmosphere on Venus and Mars planet is:

1. Carbon dioxide.
2. Oxygen.
3. Nitrogen.
4. Water vapours.

Consider the following information in respect of four objects A, B, C and D:

Object	Density (kg/m3)	Volume (m3)	Mass (kg)
A	-	2	4000
B	8000	4	-
C	2000	-	1000
D	-	4	2000

Which object would float on water?

1. A
2. B
3. C
4. D

Which of the following correctly represent the electronic distribution in the Mg atom?

In a free fall the velocity of a stone is increasing equally ion equal intervals of time under the effect of gravitational force of the earth. Then what can you say about the motion of this stone? Whether the stone is having:

In Rutherford's α-ray scattering experiment most of the alpha particles:

Almost all of the mass of an atom is concentrated at the

Generally, smaller the cell:

Nasal and genital tracts are lined by:

1. Simple columnar.
2. Stratified columnar epithelium.
3. Pseudostratified epithelium.
4. Stratified cuboidal epithelium.

Which among the following is not a leucocyte?