Atoms and Molecules — Science STD 9 — Question

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

Elephantiasis disease of human beings is caused by:

1. Wuchereria.
2. Ascaris.
3. Enterobius.
4. Ancylostoma.

The value of g on moon in 1/ 6 th of the value of g on earth. A man can jump 1.5m high on the earth. He can jump on the moon up to a height of:

The algal partner of a lichen is called:

1. Mycobiont.
2. Phycobiont.
3. Both above.
4. None above.

Smooth muscles occur in:

1. Uterus.
2. Artery.
3. Vein.
4. All the above.

Which of the following is not a postulate of Dalton's atomic theory?

Which of the following could not be a unit of speed?

Which of the labeled parts of the cell is its controlling centre:

Bone marrow is important for:

The radioactive isotope used in the treatment of cancer is: