General Science Class 9 MCQS

Root hairs are most important to a plant because they :

1. Store starch
2. Contain xylem tissues
3. Provide a habitat for nitrogen fixing bacteria
4. Increase the surface area for absorption

A type of circulatory system blood flow through the spaces among tissues called?

1. Open type circulatory system
2. Close type circulatory system
3. Pulmonary circulatory system
4. All of these

The atomic mass of an element expressed in gram is :

1. Gram molecular mass
2. Gram atomic mass
3. Gram formula mass
4. Mole

Which of the following can be separated by physical means?

1. Mixture
2. Element
3. Compound
4. Substance

Part of root between epidermis and endodermis called?

1. Xylem
2. Root hair
3. Phloem
4. Cortex

The molar mass of H2SO4 is :

1. 98 a.m.u
2. 9.8 gm
3. 98 gm
4. 9.8 a.m.u

The Molecule consist of two atoms is :

1. Monoatomic molecule
2. Polyatomic molecule
3. Hetero atomic molecule
4. Di atomic molecule

A formula that indicates actual number and type of atoms in a molecule is called?

1. Chemical formula
2. Empirical formula
3. Molecular formula
4. Formula mass

Ethyl alcohol was prepared by :

1. Ibne-Sina
2. Al-Razi
3. Al-Beruni
4. Jaber bin-Hayan

Which of the following is a homo atomic?

1. H2
2. NH3
3. H2O
4. CO2