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General Science

Description: General Science
Number of Questions: 25
Created by:
Tags: General Knowledge Physics Branches of Science General Biology Computer Aptitude General Awareness Chemistry
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The most efficient engine is _____ engine.

  1. petrol

  2. diesel

  3. electric

  4. steam


Correct Option: C

In an ordinary dry cell, electrolyte is ______.

  1. sulphuric acid

  2. manganese dioxide

  3. ammonium chloride

  4. zinc


Correct Option: C

Which of the following pairs of materials serves as electrode in chargeable batteries that are commonly used in devices such as torch lights, electric shavers etc.?

  1. Iron and Cadmium

  2. Nickel and Cadmium

  3. Lead peroxide and Zinc

  4. Zinc and Carbon


Correct Option: B

Which of the following works on Bernoulli's principle?

  1. Gas lighter

  2. Gas stove

  3. Bunsen burner

  4. None of these


Correct Option: C

Cryogenic engines find applications in _____.

  1. rocket technology

  2. frost-free refrigerators

  3. submarine propulsion

  4. researches in superconductivity


Correct Option: A

In a refrigerator, cooling is produced by ______.

  1. the ice which deposits on the freezer

  2. the sudden expansion of a compressed gas

  3. the evaporation of a volatile liquid

  4. none of these


Correct Option: A

Greenhouse is ______.

  1. a building of glass in which temperature is very low

  2. a building in which green plants are cultivated

  3. a building chiefly of glass in which temperature is maintained within the desired range

  4. none of these


Correct Option: C

The anode in a dry cell consists of _____.

  1. zinc

  2. copper

  3. cadmium

  4. graphite


Correct Option: D

Dialyzer is a /an ______.

  1. metre used for controlling volume of sound

  2. apparatus used for recharging batteries

  3. special clock which indicates the day and date

  4. apparatus used in patients with defective renal functions


Correct Option: D

Which of the following statements regarding the pressure cooker is not true?

  1. Steam helps to cook food earlier.

  2. Under high pressure, the boiling point of a liquid decreases.

  3. It leads to the saving in terms of fuel consumption.

  4. None of these


Correct Option: B

Which of the following metals is used for the manufacture of heating elements provided in electric iron (press)?

  1. Nickel

  2. Chromium

  3. Nichrome

  4. Tungsten


Correct Option: C

Radioactive substance can be produced readily in a/an _____.

  1. Wilson cloud chamber

  2. atomic pile

  3. electronic gun

  4. transistor


Correct Option: B

Floppy disc in a computer system is _____.

  1. compiler

  2. core memory

  3. software

  4. device for storing and retrieving data


Correct Option: D

In an ordinary fire extinguisher, carbon dioxide is generated by the reaction of _____.

  1. marble powder and dilute H2SO4

  2. magnesite and dilute H2SO4

  3. limestone and dilute H2SO4

  4. sodium bi-carnonate and dilute H2SO4


Correct Option: D

The safety fuse should have _____.

  1. high resistance and high melting point

  2. high resistance and low melting point

  3. low resistance and high melting point

  4. low resistance and low melting point


Correct Option: B

Which of the following polymers is widely used for making bullet proof material?

  1. Polyethylene

  2. Polyamides

  3. Polyvinyl chloride

  4. Polycarbonates


Correct Option: A

When exchange of gases occurs between blood and tissue fluid, it is called _____.

  1. external respiration

  2. tissue respiration

  3. cellular respiration

  4. none of these


Correct Option: C

The classification of human blood into A, B and O types was done by ______.

  1. Harvey

  2. Ringer

  3. Landsteiner

  4. Pasteur


Correct Option: C

Frog is a cold-blooded animal because ____.

  1. its blood always remains cold

  2. it can live in cold waters

  3. it cannot regulate its body temperature

  4. its blood always has temperature lower than the atmosphere


Correct Option: C

Type 'O' is a universal donor because it has _____.

  1. no antibodies

  2. antibodies in diluted form

  3. no antigens

  4. no white blood cells


Correct Option: C

The cation that takes part in coagulation of blood is _____.

  1. Na

  2. Ca

  3. K

  4. Cl


Correct Option: B

A transistor is most likely to be found in a ______.

  1. wrist watch

  2. fuse

  3. hearing aid

  4. fluorescent lamp


Correct Option: C

Persons with group AB are known as universal acceptors because _____.

  1. they are weak persons and always need blood transfusion

  2. the blood of all other groups can be transfused into them without any harm

  3. they have very less quantity of blood

  4. they can undergo AB blood transfusion


Correct Option: B

Which of the following is the largest wandering phagocytic cell of vertebrate blood?

  1. Thrombocyte

  2. Monocyte

  3. Erythrocyte

  4. Amoebocytes


Correct Option: B

The technique used to transmit audio signals in television broadcast is

  1. amplitude modulation

  2. frequency modulation

  3. pulse code modulation

  4. time division multiplexing


Correct Option: C
Explanation:

 The technique used to transmit audio signals in television broadcast is pulse code modulation.

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