LPG mainly contains
- ACarbon monoxide
- BMethane only
- CButane and propane
- DEthane and hydrogen
Show answer
Answer: (C) Butane and propane
DRDO CEPTAM Chemistry Questions with Answers & Explanations
19 Chemistry questions from the General Awareness section of DRDO CEPTAM, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.
The pH of pure water at 25 °C is
- A7
- B5
- C14
- D0
Show answer
Answer: (A) 7
Which gas is known as "laughing gas"?
- AAmmonia
- BNitric oxide
- CNitrous oxide
- DNitrogen dioxide
Show answer
Answer: (C) Nitrous oxide
Rusting of iron requires
- AOnly oxygen
- BOxygen and moisture
- COnly water
- DCarbon dioxide only
Show answer
Answer: (B) Oxygen and moisture
The most abundant gas in the Earth's atmosphere is
- AOxygen
- BCarbon dioxide
- CNitrogen
- DArgon
Show answer
Answer: (C) Nitrogen
The pH of pure water at 25 °C is
- A14
- B5
- C7
- D0
Show answer
Answer: (C) 7
The chemical symbol of gold is
- AGd
- BGo
- CAu
- DAg
Show answer
Answer: (C) Au
A solution with pH less than 7 is
- ASaline
- BNeutral
- CAcidic
- DBasic
Show answer
Answer: (C) Acidic
The gas used in fire extinguishers is
- ANitrogen dioxide
- BHydrogen
- CCarbon dioxide
- DOxygen
Show answer
Answer: (C) Carbon dioxide
The hardest natural substance is
- ADiamond
- BGraphite
- CQuartz
- DIron
Show answer
Answer: (A) Diamond
Ready for the real thing?
Timed General Awareness test · 25 questions · instant rank
The chemical symbol of sodium is
- ASo
- BSd
- CS
- DNa
Show answer
Answer: (D) Na
The chemical symbol of iron is
- AIn
- BFe
- CIr
- DI
Show answer
Answer: (B) Fe
Lemon juice contains
- AFormic acid
- BAcetic acid
- COxalic acid
- DCitric acid
Show answer
Answer: (D) Citric acid
Plaster of Paris is prepared from
- AGypsum
- BBauxite
- CHaematite
- DLimestone
Show answer
Answer: (A) Gypsum
Washing soda is chemically
- ASodium carbonate
- BSodium hydroxide
- CCalcium hydroxide
- DSodium bicarbonate
Show answer
Answer: (A) Sodium carbonate
The main ore of aluminium is
- AGalena
- BBauxite
- CHaematite
- DCinnabar
Show answer
Answer: (B) Bauxite
The chemical formula of water is
- AH₂O₂
- BH₃O
- CH₂O
- DHO
Show answer
Answer: (C) H₂O
The hardest natural substance is
- AIron
- BGraphite
- CQuartz
- DDiamond
Show answer
Answer: (D) Diamond
The chemical symbol of sodium is
- ASo
- BNa
- CS
- DSd
Show answer
Answer: (B) Na
These are RankerClub practice questions written in the DRDO CEPTAM pattern. They are not official SSC/IBPS/RRB papers.
