121)

Which of the following is NOT the correct match?

SSC CGL 2022

A)

The acid present in grapes – Tartaric acid

B)

The acid present in orange – citric acid

C)

The acid present in tomato – Formic acid

D)

The acid present in rancid butter – Butyric acid

122)

Which of the following element is more reactive than copper?

SSC CGL 2022

A)

Silver

B)

Zinc

C)

Gold

D)

Platinum

123)

Which of the following is soda lime?

SSC CGL 2022

A)

CaCl₂ + CaO

B)

KOH + CaO

C)

Ca(OH)₂ + CaO

D)

NaOH + CaO

124)

In organic chemistry, which of the following is an empirical rule used to predict the regioselectivity of electrophilic addition reactions of alkanes and alkynes?

SSC CGL 2022

A)

Markovnikov's rule

B)

Bredt's rule

C)

Cornforth's rules

D)

Baldwin's rules

125)

Match the elements in column A with the element group they belong to, in column B

	Column A (Element)		Column - B (Group of element in the periodic table)
i.	Na	a.	Alkali metal
ii.	Cu	b.	Alkaline earth metal
iii.	Mg	c.	Transition metal
iv.	He	d.	Zero group element

SSC CGL 2022

A)

(i) - (a), (ii) - (c), (iii) - (b), (iv) - (d)

B)

(i) - (a), (ii) - (b), (iii) - (c), (iv) - (d)

C)

(i) - (a), (ii) - (d), (iii) - (b), (iv) - (c)

D)

(i) - (d), (ii) - (a), (iii) - (b), (iv) - (c)

126)

Baking soda is ________.

SSC CGL 2022

A)

sodium hydrogencarbonate

B)

sodium sulphate

C)

sodium carbonate

D)

sodium hydroxide

127)

Which of the following substance has a pH value of about 14?

SSC CGL 2022

A)

Milk of magnesia

B)

Sodium hydroxide

C)

Blood

D)

Lemon Juice

128)

Peat coal has ______ carbon and ______ moisture content?

SSC CGL 2022

A)

High, High

B)

Low, high

C)

High, Low

D)

Low, Low

129)

In 1931, who recognised that an aromatic compound must have an odd number of pairs of electrons, which can mathematically be written as 4n + 2 (n = 0, 1, 2, 3 etc.)?

SSC CGL 2022

A)

Auguste Laurent

B)

Erich Huckel

C)

Antoine Lavoisier

D)

Jacob Berzelius

130)

What is the chemical name of saltpetre?

SSC CGL 2022

A)

Lead nitrate

B)

Potassium manganite

C)

Potassium nitrate

D)

Lead sulphate