Matter in Our Surroundings — Science STD 9 — Question

A body of mass 6kg immerses in water partially. If the body displaces 100g of water, then the apparent weight of the body is:

The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is:

Xylem is made of:

1. Tracheids
2. Vessels
3. Both of these
4. None of these

Chlorophyll is present in:

Swollen feets and ankle can be naturally cured by dipping them in salt water. Suggest the mechanism involved in this treatment.

Which of the following have been artificially selected?

The atomic number of an element E is 16. The number of electrons in ion E^2- will be:

In which of the following cases work is said to be done?

A group of cells alike in form, function and origin are called __________.

1. Tissue
2. Organ
3. Organelle
4. None of these

The unit of measuring momentum of a moving body is:

1. ms^-1
2. kg ms^-1
3. kg ms^-2
4. Nm²kg^-2