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S - Production of lactic acid occurs thr...

S - Production of lactic acid occurs through lacto bacteria.
R - Lactobacillus is useful in making curd from milk.

A

Statement S&R both are true But R is explanation of S.

B

Statement S&R both are true And R is not explanation of S.

C

.S. is true, .R. is false.

D

.S. is false, .R. is true.

Text Solution

Verified by Experts

The correct Answer is:
B
Statement S&R both are true And R is not explanation of S.
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Scientists are working hard to develop nuclear fusion reactor Nuclei of heavy hydrogen, _(1)^(2)H , known as deuteron and denoted by D , can be thought of as a candidate for fusion rector . The D-D reaction is _(1)^(2) H + _(1)^(2) H rarr _(2)^(1) He + n+ energy. In the core of fusion reactor, a gas of heavy hydrogen of _(1)^(2) H is fully ionized into deuteron nuclei and electrons. This collection of _1^2H nuclei and electrons is known as plasma . The nuclei move randomly in the reactor core and occasionally come close enough for nuclear fusion to take place. Usually , the temperature in the reactor core are too high and no material will can be used to confine the to plasma for a time t_(0) before the particles fly away from the core. If n is the density (number volume ) of deuterons , the product nt_(0) is called Lawson number. In one of the criteria , a reactor is termed successful if Lawson number is greater then 5 xx 10^(14) s//cm^(2) it may be helpfull to use the following boltzmann constant lambda = 8.6 xx 10^(-5)eV//k, (e^(2))/(4 pi s_(0)) = 1.44 xx 10^(-9) eVm Assume that two deuteron nuclei in the core of fusion reactor at temperature energy T are moving toward each other, each with kinectic energy 1.5 kT , when the seperation between them is large enough to neglect coulomb potential energy . Also neglate any interaction from other particle in the core . The minimum temperature T required for them to reach a separation of 4 xx 10^(-15) m is in the range

Scientists are working hard to develop nuclear fusion reactor Nuclei of heavy hydrogen, _(1)^(2)H , known as deuteron and denoted by D , can be thought of as a candidate for fusion rector . The D-D reaction is _(1)^(2) H + _(1)^(2) H rarr _(2)^(1) He + n+ energy. In the core of fusion reactor, a gas of heavy hydrogen of _(1)^(2) H is fully ionized into deuteron nuclei and electrons. This collection of _1^2H nuclei and electrons is known as plasma . The nuclei move randomly in the reactor core and occasionally come close enough for nuclear fusion to take place. Usually , the temperature in the reactor core are too high and no material will can be used to confine the to plasma for a time t_(0) before the particles fly away from the core. If n is the density (number volume ) of deuterons , the product nt_(0) is called Lawson number. In one of the criteria , a reactor is termed successful if Lawson number is greater then 5 xx 10^(14) s//cm^(2) it may be helpfull to use the following boltzmann constant lambda = 8.6 xx 10^(-5)eV//k, (e^(2))/(4 pi s_(0)) = 1.44 xx 10^(-9) eVm Assume that two deuteron nuclei in the core of fusion reactor at temperature energy T are moving toward each other, each with kinectic energy 1.5 kT , when the seperation between them is large enough to neglect coulomb potential energy . Also neglate any interaction from other particle in the core . The minimum temperature T required for them to reach a separation of 4 xx 10^(-15) m is in the range

A man consumed curd or buttermilk after meal which help in the process of digestion. Milk is fermented into curd by Lactobacillus bacteria. Imagine a food chain and state the category of Lactobacillus and human.

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KUMAR PRAKASHAN-MICROBES IN HUMAN WELFARE -SECTION - F MULTIPLE CHOICE QUESTIONS(MCQS FROM DARPAN BASED ON TEXTBOOK)
  1. Which of the following, decreases the crop production ? (A) Insects ...

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  2. The greater the BOD of waste water........ (A) less the pollutants ...

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  3. S - Production of lactic acid occurs through lacto bacteria. R - ...

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  4. Lactobacillus produces........ (A) Butyric acid (B) Lactic Acid (...

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  5. Following is used in the production of leavened(swollen) bread (A) As...

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  6. Where cyclosporine A is used ? (A) To remove oily stains in laundry. ...

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  7. Which products are synthesized at commercial level through microbes ? ...

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  8. …...... add organic matter to the soil and increase fertility

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  9. ........... are the result of lactic acid fermentation of fruits. (A)...

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  10. In Herbivores, methanogens help in

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  11. LAB is used in preparation of ......

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  12. For which diseases antibiotics are discovered ? (A) Whooping cough ...

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  13. Which one of the following acids, was produced by fermentation ?

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  14. Which microorganism is useful in the production of Cyclosporin A ?

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  15. Assertion .A.: In village areas biogas plants are developed. Reas...

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  16. Which bacteria are used to make curd from milk?

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  17. What is meant by mycorrhiza ?

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  18. Statement .A.: Sewage water contains large amount of organic matter an...

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  19. Methanogenic bacteria is used to produce

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  20. Microbes are

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