Structure of the Atom — Science STD 9 — Question

An elevator with load, weighing 500kg is moving up with a velocity of 0.2ms. The power of the motor in horse power is (1H.P. = 746 watt):

Which of these is wrongly matched?

1. Chloroplasts-chlorophyll.
2. Elaioplasts-starch.
3. Amylosplasts-carbohydrates.

How is the dye separated from black ink:

In case of negative work the angle between the force and displacement is:

A communicable disease is caused by:

1. Metabolic disorder.
2. Allergy.
3. Pathogen.
4. Hormonal balance.

Permanent tissues differ from meristematic tissue in:

Which of the following are physical changes?

1. Melting of iron metal.
2. Rusting of iron metal.
3. Bending of an iron rod.
4. Drawing wire of iron metal.

1. (i), (ii) and (iii)
2. (i), (ii) and (iv)
3. (i), (iii) and (iv)
4. (ii), (iii) and (iv)

Brush-bordered epithelium is found in:

The law of constant proportions was given by:

1. Proust.
2. Lavoisier.
3. Dalton.
4. Berzelius.

The element which is required in largest quantity by plants is: