If an element B has five protons and six neutrons what will be the symbol of element B _____...? Mcqs

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If an element B has five protons and six neutrons what will be the symbol of element B _____...?

(A) 115B
(B) 11B

(C) 115B
(D) None

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What is unit of Pressure...?

(A) Barr
(B) Torr

(C) Pascal
(D) All of these

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Which of the following invention is oldest ...?

(A) Clock
(B) Microscope

(C) Barometer
(D) Cycle

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Noble gases are stable because they contain _____...?

(A) 4 electrons in valence shell
(B) 6 electrons in valence shell

(C) 8 electrons in valence shell
(D) 10 electrons in valence shell

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Photosynthesis takes place in presence of the following light...?

(A) Only in green light from sun
(B) Only in sunlight from the sun

(C) Only in high intensity of light from the sun
(D) In visible light obtained from any source

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Which law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature...?

(A) Charles’ Law
(B) Avogadro’s Law

(C) Graham’s Law
(D) Boyle’s law

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What is the rarest blood type in humans...?

(A) O-
(B) O+

(C) AB+
(D) AB-

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A fixed temperature at which a pure liquid boils is called ______...?

(A) Melting point
(B) Freezing point

(C) Boiling point
(D) Both 'a' and 'b'

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The Sun has temperature of around 6,000 °C and glows ____...?

(A) Red
(B) Blue

(C) Green
(D) Orange/Yellow

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Which one of the following wavelengths of light is most effective in photosynthesis...?

(A) Blue
(B) Green

(C) Orange
(D) Yellow

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