What volume of oxygen gas (O2) measured at 0o C and 1 atom is needed to burn completely 1 L of propane gas (C3H8) measured under the same conditions ?
7 L
6 L
5 L
10 L
The equation E= mc2 is introduced by
Albert Einstein
Rutherford
Priestley
J.J. Thomson
The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15o C and 150 mmHg pressure, 1 L of O2 contains 'N' molecules. The number of molecules in 2 L of SO2 under the same conditions of temperature and pressure will be
N/2
N
2 N
4 N
The number of significant figures for the three numbers 161 cm, 0.161 cm, 0.0161 cm are
3,4 and 5 respectively
3,4 and 4 respectively
3,3 and 4 respectively
3,3 and 3 respectively
1 cc N2 O at NTP contains
All of the above
Specific volume of cylindrical virus particle is , whose radius and length are respectively. If , find molecular weight of virus.
15.4 kg/mol
At STP, the density of CCI4 vapour in g/L will be nearest to
6.87
3.42
10.26
4.57
Law of constant composition was verified experimentally by
Huckel
Stas
Einstein
Proust
An element , X has the following isotopic composition:The weighted average atomic mass of the naturally occurring element X is closest to
201 u
202 u
199 u
200 u
