Previous year MCQs

General science UPPSC 2019 GS-I
Question

Which one of the following materials contains calcium?

Answer & Solution

Answer: (Detailed Solution Below)

Option C: Gypsum

Detailed Solution:

The correct answer is “Gypsum”.
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4·2H2O.

It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard/sidewalk chalk, and drywall.

Similar Questions:

Which one of the following is not correct?
  1. A) Theory of evolution was propounded by Charles Darwin
  2. B) The breaking apart of the nucleus of an atom is called fusion
  3. C) Dry ice' is nothing but solid carbon dioxide
  4. D) Telephone was invented by Graham Bell
'Cerebral palsy' is a brain disorder found generally in:
  1. A) Old people
  2. B) Drug addicts
  3. C) Small children
  4. D) Only ladies
Wireless communication is reflected to earth’s surface by
  1. A) Troposphere
  2. B) Stratosphere
  3. C) Ionosphere
  4. D) Exosphere
Which one of the following is NOT found in space?
  1. A) Pulser
  2. B) Brittle Star
  3. C) Black Hole
  4. D) Quasar
'Dynamo' is a device, which converts:
  1. A) chemical energy into electrical energy
  2. B) electrical energy into mechanical energy
  3. C) mechanical energy into electrical energy
  4. D) electrical energy into chemical energy
With reference to Panchayats which of the statements is/ are correct?

1. Fifty percent seats shall be reserved for the women of SC/ST categories.
2. Gram Sabha is a body consisting of all persons living in the village.
3. There will be a Panchayat at intermediate level.

Select the correct answer using the codes given below:
Codes:
  1. A) 1 only
  2. B) 2 and 3
  3. C) Both 1 and 2
  4. D) 3 only
Which of the following is not correctly matched ?(Tribe) (Place)
  1. A) Pygmy - Congo
  2. B) Angami - Nagaland
  3. C) Ainu - Japan
  4. D) Khirghiz - Sudan
Which of the following was invented by Wilhelm Roentgen?
  1. A) Radio
  2. B) X-Ray Machine
  3. C) Electric Bulb
  4. D) None of the above
The atoms, in which the number of protons is same but the number of neutrons is different, are known as:
  1. A) Isotopes
  2. B) Isobars
  3. C) Isomers
  4. D) Isotones
Which of the following statement is NOT true?
  1. A) Species diversity increases from equator towards poles.
  2. B) Tropics harbour more species than temperate areas.
  3. C) Greatest biodiversity occurs in Amazon rain forest.
  4. D) Species diversity decreases from temperate areas towards poles.
The amount fo energy during transfer from one trophic level to another in an ecosystem:
  1. A) Increases
  2. B) Decreases
  3. C) Remain Constrant
  4. D) May increase or decrease
Which one of the following is NOT an example of bio-mass energy source?
  1. A) Coal
  2. B) Nuclear energy
  3. C) Gobar (Dung)
  4. D) Wood