The three elements needed for healthy growth of plants are __________...? Mcqs

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The three elements needed for healthy growth of plants are __________...?

(A) N, P, K
(B) N, C, P

(C) N, K,
(D) N, S, P

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Which of the following organisms releases molecular oxygen into water...?

(A) E.coli
(B) Phytoplankton

(C) Amoeba
(D) Salmonella

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The part of an eye acting as a diaphragm of camera is ______...?

(A) Cornea
(B) Lens

(C) Iris
(D) Retina

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When a bullet penetrates into a target, the kinetic energy of a bullet is converted into ...?

(A) Potential energy
(B) Heat energy

(C) Both B&D
(D) Mechanical energy

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Part of agriculture for the development of new varieties of plant, and their fruit is _____...?

(A) Agronomy
(B) Floriculture

(C) Horticulture
(D) Pomology

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The radioactive isotopes are formed by neutrons bombardment on the nucleus, these incident neutrons must have ___ to penetrate in the nucleus....?

(A) Very high velocity
(B) Very low velocity

(C) Intermediate velocity
(D) All of these

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Classification of Animals and Plants on the basis on chromosome number is called________...?

(A) Ecology
(B) Taxonomy

(C) Botany
(D) None of these

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‘Christian Friedrich Schönbein’ discovery is___________...?

(A) Ozone
(B) Radium

(C) Cholorine
(D) Neutron

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Which one from among the following is not an example of wedge...?

(A) Axe
(B) Ramp

(C) Knife
(D) Push pin

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Which of the following ocean is the most polluted ocean of the world...?

(A) Indian Ocean
(B) North Pacific Ocean

(C) Arctic Ocean
(D) None of the above

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