Science Practice Test 1


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25 Questions MCQ Test RAS RPSC Prelims Preparation - Notes, Study Material & Tests | Science Practice Test 1

Science Practice Test 1 for UPSC 2022 is part of RAS RPSC Prelims Preparation - Notes, Study Material & Tests preparation. The Science Practice Test 1 questions and answers have been prepared according to the UPSC exam syllabus.The Science Practice Test 1 MCQs are made for UPSC 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Science Practice Test 1 below.
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Science Practice Test 1 - Question 1

The principle on which an atomic power plant works is:

Detailed Solution for Science Practice Test 1 - Question 1

Fission

Explanation: Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei like Uranium splits in Nuclear reactors, and fusion is the process where two light nuclei combine together releasing vast amounts of energy like hydrogen combines to form helium at sun.

Science Practice Test 1 - Question 2

Which one of the following is non­bio­degradable pollutant?

Science Practice Test 1 - Question 3

The density of water is maximum at:

Science Practice Test 1 - Question 4

Which acid substance is found in vinegar?

Detailed Solution for Science Practice Test 1 - Question 4

Acetic acid
Explanation: Common Acids:-

1. Vinegar (~5% acetic acid)
2. Battery acid (~33% sulphuric acid)
3. Citric acid (found in lemon juice and also used in crystal form for cooking)
4. Tartaric Acid (also used in powdered form for cooking)
5.  Lactic acid (found in sour milk, yohgurt
6. And sometimes even hydrochloric acid (used as a lead or tin soldering flux)


Common Bases:-

1. Sodium bicarbonate (used in cooking and for the relief of acid reflux )
2. Sodium hydroxide  (caustic soda, found in some oven and drain cleaners)
3. Household bleach is a base since it contains sodium or calcium hypochlorite. Pool chlorine also contains the same or similar compounds)
4. Most washing detergents contain mild bases
5. Ammonia (used in some cleaning products)
6. Washing soda (sodium carbonate)
7. Lime (calcium hydroxide)
8. Cement (releases lime on contact with water)

Science Practice Test 1 - Question 5

Mammoth is the ancestor of:

Detailed Solution for Science Practice Test 1 - Question 5 The DNA also showed that elephant species split from each other more quickly than had been thought. Modern elephants and woolly mammoths share a common ancestor that split into separate species about 6 million years ago, the study reports. At that time African elephants branched off first.
Science Practice Test 1 - Question 6

Which of the following is not an insect?

Detailed Solution for Science Practice Test 1 - Question 6

Explanation: Sow Bug,Millipede,Spider,Centipede,Tick are all arthropods

Science Practice Test 1 - Question 7

The blood group which have no antigen is:

Detailed Solution for Science Practice Test 1 - Question 7

O

Explanation: Blood group O individuals do not have either A or B antigens on the surface of their RBCs, and their blood serum contains IgM anti-A and anti-B antibodies.

Science Practice Test 1 - Question 8

Which one of the following is not a radioactive element?

Detailed Solution for Science Practice Test 1 - Question 8

Cadmium

Explanation: radioactivity, is the process by which the nucleus of an unstable atom loses energy by emitting radiation, including alpha particles, beta particles, gamma rays and conversion electrons. A material that spontaneously emits such radiation is considered radioactive.

Science Practice Test 1 - Question 9

Which one of the following is not known as green house gas?

Detailed Solution for Science Practice Test 1 - Question 9

Hydrogen

Explanation: greenhouse gases in Earth's atmosphere are:

* water vapor
* carbon dioxide
* methane
* nitrous oxide
* ozone
* chlorofluorocarbons

Science Practice Test 1 - Question 10

The acid used in eye wash is:

Science Practice Test 1 - Question 11

Small pox and Rabies are

Science Practice Test 1 - Question 12

Presence of which of the following is the cause of ‘Minamata’ disease ?

Science Practice Test 1 - Question 13

Which of the following gas was responsible for the Bhopal Gas tragedy ?

Detailed Solution for Science Practice Test 1 - Question 13

Methyl isocyanate

Explanation: Methyl isocyanate is used to produce carbamate pesticides. Methyl isocyanate is extremely toxic to humans from acute (short-term) exposure.

Science Practice Test 1 - Question 14

Cervical cancer is caused by

Science Practice Test 1 - Question 15

The first genetically engineered human insulin was launched in the year

Science Practice Test 1 - Question 16

The antibiotic penicillin is produced by

Detailed Solution for Science Practice Test 1 - Question 16

Fungus

Explanation: penicillin, the first true antibiotic, was discovered by Alexander Fleming

Science Practice Test 1 - Question 17

The first Transgenic plant was that of

Detailed Solution for Science Practice Test 1 - Question 17

Tobacco

Explanation: The first genetically modified crop plant was produced in 1982, an antibiotic-resistant tobacco plant.

Science Practice Test 1 - Question 18

Which of the following is not a mammal ?

Detailed Solution for Science Practice Test 1 - Question 18

Great Indian Bustard

Explanation: The great Indian bustard (Ardeotis nigriceps) is a tall, long legged bird and is found in India and the adjoining regions of Pakistan.

Science Practice Test 1 - Question 19

Central Drug Research Institute (CDRI) is situated at

Science Practice Test 1 - Question 20

The ginger is a

Detailed Solution for Science Practice Test 1 - Question 20

Rhizome

Explanation: Ginger – Often called ginger root, it is not a root. It is a modified storage stem called a rhizome.

Science Practice Test 1 - Question 21

Which of the following Vitamins is essential for blood clotting ?

Detailed Solution for Science Practice Test 1 - Question 21

Vitamin – K

Explanation: Vitamin K is a fat-soluble vitamin that is most well known for the important role it plays in blood clotting. However, vitamin K is also absolutely essential to building strong bones, preventing heart disease, and crucial part ofother bodily processes.

Science Practice Test 1 - Question 22

Stephen Hawking is known for his extensive work in the field of

Science Practice Test 1 - Question 23

One carbon credit is equivalent to :

Science Practice Test 1 - Question 24

The size of the nanoparticle ranges between :

Detailed Solution for Science Practice Test 1 - Question 24

 0.1 nm to 1 nm

Explanation:it should be smaller then 1 nm

Science Practice Test 1 - Question 25

Biodiversity changes occur :

Detailed Solution for Science Practice Test 1 - Question 25

 Increases towards the equator

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