Polar Covalent Bond

Q.

What Is The Difference Between Concentrated And Dilute Acid?

Q.

A compound X consists of one molecules. Hence X will have:

1. A crystalline hard structure

2. A low melting point and boiling point

3. an ionic bond

4. a strong force of attraction between its molecule

Q. Which among the following is a polar covalent compound?

1. NaCl
2. KCl
3. HCl
4. CaO

Q.

What kind of a molecule is ${\mathrm{PCl}}_3$?

1. Non-polar covalent

2. Ionic

3. Polar covalent

4. None of these

Q. Match the following substances with their corresponding properties.

1. Deliquescence
2. Efflorescence
3. Hygroscopy

Q. Which of the following can change the colour of red litmus to blue?

1. Vinegar
2. Lemon juice
3. Sulphuric acid
4. Sodium hydroxide

Q. The bonds in a water molecule are .

1. non-polar covalent
2. ionic
3. polar covalent
4. metallic

Q.

Arrange the given list of acids and bases in ascending order of their pH.
Water, limewater, vinegar, gastric juices

1. Gastric juices < vinegar < water < limewater

2. Vinegar < water <gastric juices < limewater

3. Vinegar < limewater < water < gastric juices

4. Vinegar < gastric juices < water < limewater

Q. Which of these will not give hydronium ions when dissolved in water?

1. Baking soda
2. Lemon juice
3. Acetic acid
4. Lactic acid

Q.

Give one example for:

1. A polar covalent bond formed from two dissimilar atoms one of which is oxygen.