General Science Jkssb Chemistry Set 1 Mcqs (504 MCQs) | JKSSB & SSC Quiz

General Science

jkssb chemistry set 1 mcqs

Download PDF

Topics

jkssb physics set 1 mcqs jkssb chemistry set 1 mcqs jkssb biology set 1 mcqs

Practice Questions

504 Total
Question 311 Discuss
Ask a Friend

Which chemical is known as 'Blue Vitriol'?

A
magnesium sulphate
B
copper sulphate
C
ferrous sulphate
D
zinc sulphate

Answer & Explanation

Correct Option: B

Copper sulphate pentahydrate is known as Blue Vitriol due to its color.
Question 312 Discuss
Ask a Friend

The 'Lustre' of a metal is due to:

A
high density
B
presence of free electrons
C
high polish
D
reflection of light from atoms

Answer & Explanation

Correct Option: B

Free electrons in metals absorb and re-emit light, causing the characteristic shine.
Question 313 Discuss
Ask a Friend

What is the common name of 'Deuterium Oxide'?

A
soft water
B
heavy water
C
distilled water
D
mineral water

Answer & Explanation

Correct Option: B

Deuterium (D) is an isotope of hydrogen; D2O is called heavy water.
Question 314 Discuss
Ask a Friend

Which among the following is used as an 'Indelible Ink'?

A
silver bromide
B
silver nitrate
C
silver chloride
D
silver iodide

Answer & Explanation

Correct Option: B

Silver nitrate reacts with the skin to form a stain that cannot be easily washed away.
Question 315 Discuss
Ask a Friend

The chemical used for 'Galvanization' of iron is:

A
copper
B
zinc
C
aluminum
D
tin

Answer & Explanation

Correct Option: B

Galvanization is the coating of iron with zinc to prevent rusting.
Question 316 Discuss
Ask a Friend

Which organic compound was the 'First' to be synthesized in a laboratory?

A
methane
B
acetic acid
C
urea
D
ethanol

Answer & Explanation

Correct Option: C

Friedrich Wohler synthesized urea from ammonium cyanate in 1828, debunking vitalism.
Question 317 Discuss
Ask a Friend

Which of the following is used in 'Fire Extinguishers'?

A
carbon monoxide
B
carbon dioxide
C
nitrous oxide
D
nitrogen

Answer & Explanation

Correct Option: B

CO2 is heavier than air and displaces oxygen, extinguishing the flame.
Question 318 Discuss
Ask a Friend

What is the common name of 'Trinitrotoluene'?

A
tnt
B
rdx
C
dynamite
D
gunpowder

Answer & Explanation

Correct Option: A

TNT is a well-known chemical explosive used in military and industrial applications.
Question 319 Discuss
Ask a Friend

Which among the following is the 'Softest' form of coal?

A
anthracite
B
bituminous
C
lignite
D
peat

Answer & Explanation

Correct Option: D

Peat is the first stage in coal formation and has the highest moisture and lowest carbon content.
Question 320 Discuss
Ask a Friend

Which element is added to 'Steel' to make it stainless?

A
carbon
B
chromium
C
aluminum
D
copper

Answer & Explanation

Correct Option: B

Chromium (at least 10.5%) forms a protective oxide layer that prevents rusting.
Previous Next