If Dobereiner is related with 'law of triads', then Newlands is related with __________.

(a)

Modern periodic law

(b)

Hund's rule

(c)

Law of octaves

(d)

Pauli's Exclusion principle

Elements in the modern periodic table are arranged in__________ groups and __________ periods.

(a)

7,18

(b)

18,7

(c)

17,8

(d)

8, 17

If the electronic configuration of an element is 1s² 2s² 2p⁶ 3s² 3p¹, then it will occupy___________ block of the periodic table.

(a)

s

(b)

p

(c)

d

(d)

f

Noble gases are placed in_____________ group in the modern periodic table.

(a)

13^th

(b)

18^th

(c)

17^th

(d)

2^nd

The maximum number of electrons that can be accommodated in s, p ,d, and f subshells are__________

(a)

14, 10, 6, 2

(b)

6, 10, 2, 14

(c)

2, 6, 10, 14

(d)

6, 2, 14, 10

d-block elements are otherwise known as_______

(a)

transition elements

(b)

inner transition elements

(c)

halogens

(d)

alkali metals

Which block of the periodic table contains metals, non-metals and metalloids?

(a)

s

(b)

p

(c)

d

(d)

f

Assertion (A): Group 2 elements in the modern periodic table are called alkaline earth metals.
Reason (R): The oxides of group 2 elements produce alkaline solutions when they are dissolved in water

(a)

A is right R is wrong

(b)

R explains A

(c)

R does not explain A

(d)

R is right A is wrong

Assertion (A): Noble gases are chemically inert in nature.
Reason (R) : Noble gases have stable electronic structures

(a)

Both A & R are right

(b)

Both A & R are wrong

(c)

A is right R is wrong

(d)

A is wrong R is right

Assertion (A): Non-metals are electronegative.
Reason (R) : Non-metal lose electrons to form cation

(a)

Both A & R are right

(b)

Both A & R are wrong

(c)

A is right R is wrong

(d)

A is wrong R is right