General Science Class 9 MCQS

Nobel gases are stable because they contain :

1. 4 electrons in valence shell
2. 6 electrons in valence shell
3. 8 electrons in valence shell
4. 10 electrons in valence shell

Bond which involve 3 shared electron pairs is a :

1. Double covalent bond
2. Single covalent bond
3. Triple covalent bond
4. None of above

A non-metal atom form anion by :

1. Loses of electrons
2. Gain of electrons
3. Loses of protons
4. Gain of protons

When two identical atoms share electron pairs and exert force on each other than bond form is :

1. Non-polar covalent bond
2. Polar covalent bond
3. Double covalent bond
4. Coordinate covalent bond

Synthetic resins are used on places where :

1. Electric resistance is required
2. Water resistance is required
3. Adhesion is required
4. Friction is required

Oxygen belongs to group VIA so number of electrons in its valence shell are :

1. 3
2. 4
3. 5
4. 6

Electron pairs which are not shared by atoms are called?

1. Electron pairs
2. Lone pairs
3. Bond pairs
4. Shared pairs

Strength of intermolecular forces from ionic or covalent bond is :

1. Weaker
2. Stronger
3. Equal
4. None of above

Ionic crystals have :

1. High melting points
2. Moderate melting points
3. Low melting points
4. None of above

Bond formed by mutual sharing of electron is :

1. Ionic bond
2. Coordinate covalent bond
3. Covalent bond
4. Metallic bond