General science - Multiple Choice Questions (MCQs) – Page 24

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Recent MCQs

The mirror used by a dentist to examine the teeth of patients is

  1. Concave
  2. Convex
  3. Plane
  4. Cylinderical
General science

Electric motors operating at low voltages tend to burn out because

  1. they draw more current which is inversely proportional to the voltage
  2. they draw more current which is inversely proportional to the square root of the voltage
  3. they draw heat proportional to v2
  4. low voltage sets in electrical discharge
General science

Charcoal which is used in de-colouring raw sugar is:

  1. Wood charcoal
  2. Sugar charcoal
  3. Animal charcoal
  4. Coconut charcoal
General science

Chlorophyll contains:

  1. Iron
  2. Copper
  3. Magnesium
  4. Manganese
General science

Change in the base sequence within a gene is called:

  1. Mutation
  2. Cloning
  3. Fusion
  4. Breeding
General science

Biological Oxygen Demand(BOD) is a standard criteria for -

  1. Pollution assay in aquatic ecosystems
  2. Assaying 02 level in high altitude regions
  3. Measuring 02 level in blood
  4. Computing 02 level in forest ecosystems
General science

Which one of the following reflects back more sunlight as compared to the other three?

  1. Sand desert
  2. Paddy crop land
  3. Land covered with fresh snow
  4. Prairie Plain
General science

Which of the following elements is a semi conductor?

  1. Aluminium
  2. Silicon
  3. Silver
  4. Lead
General science

Match List-I with List-II and select the correct answer using the codes given below:
(Metal) (Property)
List I - List II

A) Sodium - 1) Good conductor of electricity
B) Mercury - 2) Liquid at room temperature
C) Silver - 3) Poor conductor of heat
D) Lead - 4) Can be easily cut with knife

  1. 2 3 1 4
  2. 1 4 3 2
  3. 4 2 1 3
  4. 4 1 2 3
General science

Red light is used for danger signals because it:

  1. is scattered least
  2. is soothing to eye
  3. has least chemical effect
  4. is absorbed least by air
General science

Which one of the following gases is not a green house gas?

  1. CO2
  2. NO2
  3. CH4
  4. O2
General science

The temperature of the human body:

  1. decreases in winters
  2. increases in summers
  3. neither decreases in winters nor increases in summers
  4. increases in winters
General science

Which of the following is used in fire alarm ?

  1. Photo cell
  2. Water
  3. Solar cell
  4. None of the above
General science

Which of the following is associated with potassium deficiency?

  1. Kidney damage and paralysis of muscles
  2. Low blood pressure
  3. Hip-joint replacement
  4. Blood transfusion
General science

The inexhaustible source of energy of the star due to:

  1. Conversion of Hydrogen to Helium
  2. Conversion of Helium to Hydrogen
  3. Decay of radioactive elements
  4. Excess of oxygen that helps burning and release of energy
General science

In surgery, what is arthroplasty?

  1. Open heart surgery
  2. Kidney transplant
  3. Hip-joint replacement
  4. Blood transfusion
General science

Match List I with List Il and select the correct answer using the code given below
List I [Product] - List II [Source]

(A) Opium - (a) Bark
(B) Hing - (b) Root
(C) Rubber - (c) Fruit
(D) Quinine - (d) Stem

  1. A-a, B-b, C-c, D-d
  2. A-c, B-b, C-d, D-a
  3. A-d, B-b, C-a, D-c
  4. A-b, B-d, C-c, D-a
General science

Which one of the following is not an explosive?

  1. Trinitrotoluene
  2. Trinitroglycerine
  3. Cyclotrimethylene Trinitramine
  4. Nitrochloro chloroform
General science

Which of the following us used in the treatment of blood cancer?

  1. lodine-131
  2. Sodium-24
  3. Phosphorus-32
  4. Cobalt-60
General science

The main pollutant in the smoke coming from cigarette is:

  1. Carbon monoxide and Dioxicine
  2. Carbon monoxide and Nicotine
  3. Carbon monoxide and Benzene
  4. Dioxicine and Benzene
General science

Tapa cloth is obtained from the plants of which one of the following family?

  1. Asclepiadaceae
  2. Moraceae
  3. Graminae
  4. Malvaceae
General science

For human blood transfusion, which blood group is known as universal donor?

  1. B+ Group
  2. O Group
  3. AB Group
  4. A+ Group
General science

The cause of sweetness in the milk is because of the presence of:

  1. Micros
  2. Lactose
  3. Sucrose
  4. Carotin
General science

What happens when some charge is placed on a soap bubble ?

  1. Its radius increases
  2. Its radius decreases
  3. The bubble collapses
  4. None of the above
General science