Related Questions

The most abundant element in the earth 's crust is oxygen . The second most abundant element is the earth's crust is -
A Hydrogen
B Silicon
C Nitrogen
D Brass
The most abundant rare gas in the atmosphere is
A He
B Ne
C Ar
D Xe
The most abundant inert gas in the atmosphere is
A Helium
B Neon
C Argon
D Krypton
The most abundant constituent of atmospheric air is :
A Carbon
B Hydrogen
C Oxygen
D Nitrogen
The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be
A 2M
B $$\frac{{\text{M}}}{2}$$
C M
D $$\frac{{\text{M}}}{4}$$
দুটি এক-পরমাণুক আদর্শ গ্যাস পরস্পরের সাথে তাপীয় সাম্যাবস্থায় আছে। A গ্যাস m ভরের অণু দ্বারা গঠিত, এবং B গ্যাস 4m ভরের অণু দ্বারা গঠিত। A গ্যাসের আয়তন ৪ গ্যাসের আয়তনের দ্বিগুণ। এদের চাপের অনুপাত PA / PB কত? (Two monoatomic ideal gases are in thermal equilibrium with each other. Gas A is composed of molecules with mass m while gas B is composed of molecules with mass 4m. The volume of gas A is twice that of gas B. What it the ratio of their pressures PA / PB ?)
A 1/4
B 1/2
C 1
D 2
Which is abundant in Gobar gas?
A Carbon dioxide
B Methane
C Oxygen
D Hydrogen
Which one of the following elements is most abundant in the earth's crust?
A Oxygen
B Sulphur
C Silicon
D Carbon
Which of the following is the most abundant metal on Earth's crust?
A Magnesium
B Iron
C Copper
D Aluminium
Which metal is most abundant in the earth's crust?
A Calcium
B Magnesium
C Aluminium
D Iron

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