Number of moles of required to oxidise one mole of ferrous oxalate completely in acidic medium will be
0.6 mole
0.4 mole
7.5 moles
0.2 mole
Which law says that the matter is composed of discrete particles which do not break up during a chemical change?
Le chatlier Principles
Laws of chemical combination
Laws of conservation of mass
Huckel's law.
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
Ratio of Cp and Cv of a gas 'X' is 1.4. The number of atoms of the gas 'X' present in 11.2 L of it at NTP will be
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
The number of oxygen atoms in 4.4 g of CO2 is
How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCI ?
0.044
0.333
0.011
0.029
One litre hard water contains 12.00 mg Mg2+ . Milliequivalents of washing soda required to remove its hardness is
1
12.16
1 x 10 -3
12.16 x 10 -3
Which law says that during any physical or chemical change, the matter is neither created nor destroyed. however, it may change from one form to another ?
Huckel's Law
Law of conservation of mass
Law of constant proportion
Law of electrolysis
Law of constant composition was proposed by
A. Lavoisier
Proust
Huckel
Rutherford
