1. Which type of formula gives the way the atoms are arranged and the bonds between them?

    Molecular formula

    Empirical formula

    Structural formula

    All

2. Which type of bond is formed by sharing of electrons between two atoms?

    Metallic bond

    Covalent bond

    Hydrogen bond

    Ionic bond

3. Which is the rarest element in the earth's crust?

    Lawrencium

    Europium

    Astatine

    Dysprosium

4. Which of the following items is least acidic in nature?

    Shampoo

    Urine

    Human blood

    Milk

5. Which of the following items is the most acidic in nature?

    Lemon juice

    Gastric juice

    Orange juice

    Tomato juice

6. Which compound is the most refractory substance known, melting at 3990°c?

    Porcelain

    Alumina

    Sodium chloride

    Tantalum carbide

7. What does soot contain?

    Cabon

    Nitrogen

    Chlorine

    All

8. Which of the following items does not contain the element mercury?

    Thermos flask

    Thermometer (Classical)

    Barometer

    Vernier calliper

9. Which is the most abundant mettallic element in the earth's crust?

    Iron

    Aluminium

    Magnesium

    Silver

10. How many 'arms' does carbon have to link with other elements?

    Four

    Six

    Eight

    Sixteen

11. What is used as the lineing for a nonstick frypan?

    Nylon

    Teflon

    Dacron

    All