Explore topic-wise MCQs in ONGC.

This section includes 25 Mcqs, each offering curated multiple-choice questions to sharpen your ONGC knowledge and support exam preparation. Choose a topic below to get started.

1.

Aluminium in common glass may be permitted upto:

A. 2 %.
B. 4 %
C. 6 %.
D. 10 %.
Answer» C. 6 %.
Discussion
2.

The variety of plastic clay known as:

A. Terra cotta.
B. Fuller’s clay.
C. Bentonite.
D. Ball clay
Answer» D. Ball clay
Discussion
3.

Terracotta is a/an:

A. Grey coloured variety of ball clay.
B. Type of terra-rossa.
C. Impure, buff or brown coloured variety of china clay.
D. White, soft at J earthy variety of fuller’s earth.
Answer» D. White, soft at J earthy variety of fuller’s earth.
Discussion
4.

The chief raw material of ceramic industry is:

A. Silt.
B. Clay.
C. Kyanite
D. Quartz.
Answer» C. Kyanite
Discussion
5.

 Choose the essential characters of cannel coal :

A. lt is tough and of uniform texture
B. lt has no banded structure and essentially a drift deposit.
C. lt is Dull black in colour and does not soil the finger.
D. All the above are correct.
Answer» E.
Discussion
6.

:The process of conversion of vegetable matter to coal involves

A. Concentration of oxygen and hydrogen.
B. Loss of oxygen and carbon
C. Loss of oxygen and carbon and concentration of hydrogen. `
D. Loss of oxygen and hydrogen and concentration of carbon.
Answer» E.
Discussion
7.

Mark the correct  statement about the  Barakar coals:

A. Low moisture.
B. Low volatile.
C. High fix carbon.
D. All the above.
Answer» E.
Discussion
8.

 Most of the coal in the Gondwana is found in the:

A. Damuda system.
B. Talchir series.
C. Maharashtra series.
D. Jabalpur series.
Answer» B. Talchir series.
Discussion
9.

: lndia’s known coal resources have been assessed to be about:

A. 100 billion tones.
B. 136 billion tones.
C. 196 billion tones
D. 230 billion tones.
Answer» D. 230 billion tones.
Discussion
10.

 Which ls the most prominent structural element In the sohagpur coal field

A. Chaila trust.
B. Bamhani-chilpa fault.
C. Murree thrust.
D. Chapman fault.
Answer» C. Murree thrust.
Discussion
11.

The coalificatlon process is caused mainly by:

A. Rise of temperature.
B. Long Geological time.
C. Rise of temperature and geological time.
D. Constant temperature and greater depth
Answer» D. Constant temperature and greater depth
Discussion
12.

The lignite deposits of Neville associated with the:

A. Lower part of Ranaghat formation.
B. Upper part of the Cuddalore formation
C. Kankawati series.
D. Rajahmundry sandstone.
Answer» C. Kankawati series.
Discussion
13.

 Flank of coal means:

A. The degree of maturation.
B. The water content in the coal.
C. None of these
Answer» B. The water content in the coal.
Discussion
14.

Mark the correct statement:

A. Framboidal pyrite contributes a great deal to the formation of pyritic sulphur in coal.
B. ln a coal seam sulphur increased form bottom to the top.
C. In a sequence of coal seams the younger seam contains greater amount of sulphur than the
D. Underlying older seam. All the above are correct
Answer» E.
Discussion
15.

The chief raw material of the cement industry is:

A. Sand
B. Clay.
C. Limestone.
D. Quartz
Answer» D. Quartz
Discussion
16.

 Deposits of phosphoresce and the polymetallic nodules in the Indian Ocean are:

A. Terrigenous deposits.
B. Biogeneous deposits.
C. Authigenic deposits.
D. None of these.
Answer» D. None of these.
Discussion
17.

 Apatite deposits of singhbhum occur in the form ot veins and lenses in the 

A. Granulose rocks
B. Gneissose rocks.
C. Schistose rocks
D. Granitic rocks.
Answer» D. Granitic rocks.
Discussion
18.

Mark the correct statement about the phosphoresce deposits ot Jhabua district (M.P.) :

A. lt is a sedimentary-Stromatolite type deposits.
B. It occurs within the Precambrian met sediments.
C. It belongs to the Aravalli super group.
D. All the above are correct.
Answer» E.
Discussion
19.

The principal mineral source of fertilizer industry is / is:

A. Gypsum.
B. Pyrite.
C. Flock phosphates.
D. All the above.
Answer» E.
Discussion
20.

The essential basic raw material for manufacture of glass is:

A. Feldspar.
B. Quartz.
C. Feldspar and Quartz.
D. Quartz and Mica.
Answer» C. Feldspar and Quartz.
Discussion
21.

Multan matte is:

A. China clay.
B. Ball clay.
C. Terracotta.
D. Fuller’s earth.
Answer» E.
Discussion
22.

Kaolin is also known as:

A. China clay.
B. Ball clay.
C. Fire clay.
D. Fuller’s earth
Answer» B. Ball clay.
Discussion
23.

 High-grade natural abrasives are:

A. Diamond and corundum.
B. Diamond, emery and garnet.
C. Corundum, emery and garnet.
D. Diamond, corundum, emery and garnet.
Answer» E.
Discussion
24.

 Neutral refractory minerals are:

A. Chromite and graphite.
B. Kyanite and sillimanite.
C. Magnesite and dolomite
D. Silica and fireclay.
Answer» B. Kyanite and sillimanite.
Discussion
25.

 Andalusite converts at temperature between 1380 and  into:

A. Kaolinite.
B. Lillie.
C. Mullet.
D. Muscovite.
Answer» D. Muscovite.
Discussion