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UPSC :- Paper Notice and syllabus : Competitive Book :- Important Project :-
Q1. Which one of the Following is used in preparing a natural masquito repellent ?
A) Congress grass
B) Elephant grass
C) Lemon grass
D) Nut grass
Ans c
* Congress Grass is Danger for the former Cropt . It is not preparing a natural masquito repellent.
* Elephant Grass is the Very big lief grass.
* Nut grass is also know as moya grass.
* Lemon grass praduce the Acorbic acid then it is usid the natural masquito repellent.
Q2. With reference to recent developments regarding 'Recombinant Vector Vaccines', consider the following statements :
1. Genetic engineering is applied in the development of these vaccines.
1. Dacteria and viruses are used as vactors.
Which of the statements given above is/are correct ?
A) 1 only
B) 2 only
C) Both 1 and 2
D) Neither 1 nor 2
Ans C
Q3. In the context of hereditary diseases, consider the following statements:
1. Passing on mitochondrial diseases from parest to child can be prevented by mitochondrial replacement therapy either before or after in vitro fertilization of egg.
2. Achild inherits mitochondrial diseases entirely from mother and not from father.
Which of the Statements given above is/are correct ?
A) 1 only
B) 2 only
C) Both 1 and 2
D) Neither 1 nor 2
Ans C
* DNA - I) Nuclear DNA
II) Extra nulear DNA
1. Mitochondrial DNA (mt-DNA)
2. Plastid DNA
Q4. Bollgard I and Bollgard II Technologies are mentioned in the context of
A) clonal Propagation of crop plants
B) Developing genetically modified crop plants.
C) Production of plant growth substances
D) Production of biofertilizers
Ans B
* Bollgar - I - Single Gene tech - cry - 1 Ac
* Bollgar - II - Double Gene tech - Cry - 1 Ac and 1 Ab
Q5. In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following ?
1. Area of the hole in the lid
2. Temperature of the flame
3. Weight of the lid
Select the correct answer using the code given below.
A) 1 and 2 only
B) 2 and 3 only
C) 1 and 3 only
D) 1, 2 and 3 only
Ans D
Q6. Water can dissolve more substances than any other liquid becouse.
A) It is dipolar nature
B) It is a good conductor of heat
C) It has high value of specific heat
D) It is an oxide of hydrogen
Ans A
Q7. With reference to street-lighting , how do sodium lamps differ from LED lamps?
1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps.
2.As street-light , sodium lamps have longer life span then LED lamps.
3.Thee Sectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant color advantagers in street-lighting.
Select the correct answer using the code given below.
A) 3 only
B) 2 only
C) 1 and 3 only
D) 1, 2 and 3
Ans C
Sodium lamp :-
* Gas Discharge Based
* 589-589.56 nm (yellow)
Led :-
* 400-700 nm
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