In fireworks,the green flame is produced because of __________...? Mcqs

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In fireworks,the green flame is produced because of __________...?

(A) Sodium
(B) Barium

(C) Mercury
(D) Potassium

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Which of the following is used in Pencils...?

(A) Graphite
(B) Silicon

(C) Charcoal
(D) Phosphorous

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IC stands for _____...?

(A) Insulated Cable
(B) Intelligent Chip

(C) Integrated Circuit
(D) Internal Component

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The shielding effect across the period _______...?

(A) Increases
(B) Decrease

(C) Moderate
(D) Same

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What happens to the molecules of a gas when the gas changes into a liquid...?

(A) They move closer and lose energy
(B) They move closer and gain energy

(C) They move apart and lose energy
(D) They move apart and gain energy

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Which animal has three hearts...?

(A) Crow
(B) Dolphin

(C) Octopus
(D) None of these

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Snowfall is required from alleviation of mountain ______...?

(A) 36 - 38 degree
(B) 30 - 34 degree

(C) 38 - 40 degree
(D) None of these

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What is the respiration equation in plants...?

(A) C6H12O6 + 6O2 → 6CO2 + 6H2O
(B) 6CO2 + 6H2O → C6H12O6 + 6O2

(C) 6CO2 + 6O2 → C6H12O6 + 6H2O
(D) 6H2O + 6O2 → C6H12O6 + 6CO2

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Transfer of internal energy by collision of particles and movements of electrons within the body is called...?

(A) Conduction
(B) Convection

(C) Radiation
(D) Insulation

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Which gas does a Photocopier machine produce...?

(A) Ozone
(B) carbon dioxide

(C) Sulfur dioxide
(D) None of these

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