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Daily Quiz: April 26, 2018
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- Question 1 of 7
1. Question
1 pointsCategory: Science and Technologywhen an air bubble at the bottom of lake rises to the top,it will
Correct
The size of the air bubble increase as its rise from the bottom of the lake to the top due to decrease in hydrostatic pressure.
Incorrect
The size of the air bubble increase as its rise from the bottom of the lake to the top due to decrease in hydrostatic pressure.
- Question 2 of 7
2. Question
1 pointsCategory: Science and Technologywhich one of the following is used as an antifreeze for the automobile engines ?
Correct
Antifreezes are chemical compound added to water to reduce the freezing pont of the mixture under subzero condition in temperature region. Ethylene glycol is used as anti freeze for automobile engines.
Incorrect
Antifreezes are chemical compound added to water to reduce the freezing pont of the mixture under subzero condition in temperature region. Ethylene glycol is used as anti freeze for automobile engines.
- Question 3 of 7
3. Question
1 pointsCategory: Science and Technologythe major component of honey is
Correct
Fructose (38.19) ,the sweetest sugar, is the major component of honey other constituents are Dextrose (21-28%) ,maltose (8.81%) ,pigment (2.21%) Ash(1%) ,water(7.2%)
Incorrect
Fructose (38.19) ,the sweetest sugar, is the major component of honey other constituents are Dextrose (21-28%) ,maltose (8.81%) ,pigment (2.21%) Ash(1%) ,water(7.2%)
- Question 4 of 7
4. Question
1 pointsCategory: Science and Technologyantigen is a substance which
Correct
Antigen is a foreign substance living or non living that trigger immune system by way of antibody formation and these antibodies neutralize antigens.The majority of them are proteins and polysaccharides found on the wall of bacteria and on the cell coats of virus
Incorrect
Antigen is a foreign substance living or non living that trigger immune system by way of antibody formation and these antibodies neutralize antigens.The majority of them are proteins and polysaccharides found on the wall of bacteria and on the cell coats of virus
- Question 5 of 7
5. Question
1 pointsCategory: Science and TechnologyThe genetic engineering approval committee, whose permission is required foe cultivation of any genetically modified crop in India, is under the union ministry of
Correct
The genetic engineering approval committee (GEAC) is under the ministry of environment and forests.
Incorrect
The genetic engineering approval committee (GEAC) is under the ministry of environment and forests.
- Question 6 of 7
6. Question
1 pointsCategory: Science and TechnologyA radioactive substance has a half- life of four months. Three –fourth of the substance would decay in
Correct
1/2 life = 4 months after 4 months it will be half of the previous quantity that is 1/2 +1/2 of 1/2 = 3/4 (75%) of the substance it take 8 months.
Incorrect
1/2 life = 4 months after 4 months it will be half of the previous quantity that is 1/2 +1/2 of 1/2 = 3/4 (75%) of the substance it take 8 months.
- Question 7 of 7
7. Question
1 pointsCategory: Science and TechnologyConsider the following statement:
In nuclear reactor, self-sustained chain reaction is possible , because
- More neutrons are released in the each of the fission reaction
- The neutrons immediately take part in the fission process
- The fast neutrons are slowed down by graphite
- Every neutron released in the fission reaction initiates further fission.
Which of these statement are correct ?
Correct
Statement 2 is not correct. In nuclear the chain reaction is controlled. In each fission of U-235 or PI-239 atom, there neutrons are produced. In nuclear reactors two neutrons of these three are absorbed with the help of moderators e.g. Graphite, heavy water or Beriliumoxide . the remaining ‘one’ neutron is used immediately to break one atom of nuclear fuel and the cycle is repeated the neutrons take part in the process , then the reaction will go out of control and the reactors will become an atom bomb.
Incorrect
Statement 2 is not correct. In nuclear the chain reaction is controlled. In each fission of U-235 or PI-239 atom, there neutrons are produced. In nuclear reactors two neutrons of these three are absorbed with the help of moderators e.g. Graphite, heavy water or Beriliumoxide . the remaining ‘one’ neutron is used immediately to break one atom of nuclear fuel and the cycle is repeated the neutrons take part in the process , then the reaction will go out of control and the reactors will become an atom bomb.
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