Which of the following is NOT the combined form of Carbon?

This question was previously asked in
RRB ALP Previous Paper 8 (Held On: 13 Aug 2018 Shift 3)
View all RRB ALP Papers >
  1. Chalk
  2. Marble
  3. Diamond
  4. Dolomite

Answer (Detailed Solution Below)

Option 3 : Diamond
Free
General Science for All Railway Exams Mock Test
20 Qs. 20 Marks 15 Mins

Detailed Solution

Download Solution PDF
  • The element carbon is available abundantly in nature and occurs in free as well as in the combined state.
  • Carbon in Free State is found as diamond and graphite.
  • In the Combined State, it is found in the following compounds:
  •  

    In the form of Carbonates

    Calcium Carbonate, Marble, Calamine(ZnCO3)

    Fossil Fuel

    Coal, Petroleum, Natural Gas

    Carbonaceous Nutrients

    Carbohydrates, Proteins, Fats

    Natural Fibres

    Cotton, Wool, Silk

Latest RRB ALP Updates

Last updated on Jun 2, 2025

-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.

-> Railway Recruitment Board activated the RRB ALP application form 2025 correction link, candidates can make the correction in the application form till 31st May 2025. 

-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.

-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.

-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.

->The candidates must have passed 10th with ITI or Diploma to be eligible for this post. 

->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.

-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways. 

-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.

-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here

Hot Links: teen patti real cash game teen patti wala game teen patti boss