B
Q. What is the main constituent of ‘Gobar Gas’ (biogas) ?
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Q. Rate of diffusion of a gas is
Q. The commercially useful property of both ethylene and styrene is their ability
Q. The atoms of the elements having same mass number but different atomic number are called
Q. Cobalt - 60 is commonly used in radiation therapy because it emits
Q. How many electrons are there in a Hydrogen atom?
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Q. Which of the following is correct about Hydrazine?
Q. The inert gases are ____ in water.
Q. Nitric acid (95%) can be obtained from its dilute solution by
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