The molecular model of DNA which suggests the basic mechanism replication was proposed by...? Mcqs

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The molecular model of DNA which suggests the basic mechanism replication was proposed by...?

(A) James Watson and Francis Crick
(B) Charles Darwin and Gregor Mendel

(C) Louis Pasteur and Robert Koch
(D) Albert Einstein and Max Planck

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Inspiration involves ______...?

(A) Contraction of intercostals muscles
(B) Contraction of diaphragm

(C) Inward movement of ribs
(D) Both a and b

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Which of the following is the flightless bird...?

(A) Pavo cristatus
(B) kakapo

(C) Passer
(D) None of these

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Each seed is covered on the outside by a _______, which is also known as _______....?

(A) Embryo, Endosperm
(B) Endosperm, Pericarp

(C) Seed coat, Testa
(D) Seedling, Radicle

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Which one of the following non-metals is not a poor conductor of electricity...?

(A) Sulphur
(B) Selenium

(C) Bromine
(D) Phosphorus

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Which of the following metal occurs in free state ______________...?

(A) Lead
(B) Iron

(C) Mercury
(D) Copper

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Mass spectrograph was Invented by...?

(A) Rutherford
(B) Chadwik

(C) F.W.Aston
(D) None of these

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Instead of seeds, non-flowering plants produce _______...?

(A) Pollen
(B) Fruits

(C) Spores
(D) Leaves

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What type of energy wind produces which is used to rotate the blades of fan of energy system...?

(A) Potential energy
(B) Kinetic energy

(C) Thermal energy
(D) Electrical energy

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_______________ causes biomagnification problem in the Ecosystem....?

(A) Lead
(B) Mercury

(C) Chromium
(D) Copper

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