The size of Covid-19 virus is______...? Mcqs

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The size of Covid-19 virus is______...?

(A) 25-30KB
(B) 28-30KB

(C) 29-30KB
(D) None of these

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Which isotope is used to investigate carbon uptake and biochemical pathways in plants...?

(A) Phosphorus - 32
(B) Carbon - 14

(C) Lead - 210
(D) Nitrogen - 15

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Sound travels in the form of waves called...?

(A) Longitudinal Waves
(B) Transverse waves

(C) Electromagnetic waves
(D) Radio waves

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Non stick cooking utensils are coated with________...?

(A) Black paint
(B) PVC

(C) Teflon
(D) polystyrene

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Our Sun is a star and is the closest star to Earth. The next closer star to Earth is known as ____...?

(A) Sirius
(B) Orion

(C) Alpha Centauri
(D) Andromeda

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Oil rises up to wick in a lamp because_____________...?

(A) Oil is very light
(B) Oil is volatile

(C) Diffusion of oil through the wick
(D) Capillary action phenomenon

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Electronic configuration is distribution of _______...?

(A) Proton
(B) Neutron

(C) Electron
(D) Positron

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Thermal energy transfer required to change a liquid into gas without changing its temperature is called...?

(A) Latent heat of freezing
(B) Latent heat of vaporization

(C) Latent heat of boiling
(D) Latent heat of melting

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The good sources of Vitamin-A are...?

(A) green leafy vegetables
(B) seeds

(C) fresh vegetables and fruits
(D) sea foods

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Washing machine is working on the principle of...?

(A) Photoelectric effect
(B) Electric-magnetic induction

(C) Centrifugation
(D) None of these

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