Chemistry - 9 Chapter - 4Periodicity of Elements and Periodic TableTest - 31

Chemistry - 9 Chapter - 4
Periodicity of Elements and Periodic Table
Test - 31

1. In 1894 Raleigh and Ramsay succeeded in separating a new gas from air and named it Krypton.

a) True
b) False

2. Oxides of metals are basic in nature.

a) TRUE
b) FALSE

3. The metals react vigorously with water producing oxygen gas

a) FALSE
b) TRUE

4. Aluminium reacts with dry chlorine at high temperature to form Aluminium Chloride whose solution in water is basic

a) FALSE
b) TRUE

5. 10 ^-14 part of a meter is called picometer (pm]

a) FALSE
b) TRUE

6. In Mendeleef's table blank spaces were left for radioactive elements

a) FALSE
b) TRUE

7. Groups number of an element represents the number of shells

a) FALSE
b) TRUE

8. Oxides of non-metals are acidic in nature

a) FALSE
b) TRUE

9. Sixth period contains 36 elements

a) FALSE
b) TRUE

10. Ionization energy decreases across a period

a) TRUE
b) FALSE

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