Q. Increasing human population put pressure on the natural resources such as land, soil, water, fossil fuels etc. IT causes -
I. Soil erosion
II. Salinization of soils
III. Desertification
IV. Eutrophication
1) I and II
2) I, II and III
3) III and IV
4) I, II, III and IV
Q. Which of the following is/ are sustainable agricultural practices?
I. Mixed Cropping
II. Crop Rotation
III. Intercropping
IV. Integrated farming
Correct code is -
1) I, II and III only
2) II, III and IV only
3) I, III, and IV only
4) I, II, III and IV all
Q. The device used for producing electric current is called -
1) Generator
2) Galvanometer
3) Ammeter
4) Motor
Q. Which of the following is/ are used of Biogas?
I. Fuel for cooking food
II. Used for lighting
III. As a fuel to run engines
IV. Used for generating electricity
Correct code is -
1) Only I
2) Only I and II
3) Only I, II and IV
4) I, II, III and IV all
Q. Sun derives its energy from -
1) The fusion of hydrogen nuclei into helium nuclei
2) The fusion of helium nuclei into hydrogen nuclei
3) The fission of hydrogen nuclei
4) The fission of helium nuclei
Q. Which of the following statements is/ are true?
I. A concave mirror is used as a head-mirror by the ENT surgeons.
II. The concave metal dishes are used in dish antennas (or the dish aerials) of televisions.
1) Only I is correct
2) Only II is correct
3) I and II both are correct
4) Neither I nor II is correct
Q. Which of the following materials cannot be used to make a lens?
1) Water
2) Glass
3) Plastic
4) Clay
Q. The human eye forms the image of an object at its -
1) Cornea
2) Iris
3) Pupil
4) Retina
Q. Jatayu Conservation Breeding Centre has been established in -
1) Bikaner (Rajasthan)
2) Kanpur (Uttar Pradesh)
3) Chennai (Tamil Nadu)
4) Pinjore (Haryana)
Q. Which of the following pairs is not matched correctly?
1) Ramsar Convention - Convention on wet lands
2) Stockholm Convention - Convention on Persistent Organic Pollutants
3) Bonn Convention - Convention on Child Labor
4) Vienna Convention - Convention for the Protection of Ozone Layer
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