0.75g plantic chloride, a monoacid base on ignition gave 0.245g plantinum. The molecular weight of the base is
74.5g of a metallic chloride contain 35.5 g of chlorine The equivalent weight of the metal is
The number of oxygen atoms 4.4g of CO2 is
The correct order for homolytic bond dissociation energies (AH in kcal/mol) for CH4 (A), C2 H6 (B) and CH3 Br (C), under identical..
How many significant digits are there in 0.5?
2.76 g of silver carbonate on being strongly heated yields a residue weighing
The molecular weight of O2 and SO2 and 32 and 64 respectively. At 15 degree C and 150 mm Hg pressure, one litre of O2 contains N m..
An element, x has the following isotopic composition l.
What volume of NH3 gas at STP would be needed to prepare 100 ml of 2.5 molal (2.5m) ammonium hydroxide solution
Chlorobenzene is o, p -directing in electrophilic substitution reaction. The directing influence is explained by
In an experiment it showed that 10 ml of 0.05 M solution of chloride required 10 ml of 0.1 M solution of AgNO3, which of the follo..
Number of moles of MnO4 required to oxidize one mole of ferrous oxalate completely in acidic medium will be :
The weight of a molecule of the compound C60 H1
If Na is avogadros number then number of valence electrons in 4.2 g of nitride icons N^3_ is
The same amount of zinc is treated separately with excess of sulphuric acid and excess of solution hydroxide. What will be the rat..
Boron has two stable isotopes, 10 B (19%) and 11 B(18%). Average atomic weight for boron in the periodic table is
1 L oxygen gas at STP will weigh
The maximum number of possible optical isomers in 1-bromo-2-methyl cyclobutane is
Haemoglobin contains 0.334 % of iron by weight. The molecular weight of haemoglobin is approximately 67200. The number of iron ato..
An element, X has the following isotopic composition:
200X:90%, 190X:8.0%, 202X:2.0%
Which kind of fission is favoured by sunlight?
The state of hybridization of C2, C3, C5 and C6 of the hydrocarbon,
One gram of hydrogen is found to combine with 80 g of bromine the equivalent weight of calcium is
Density of a 2.05 M solution of acetic acid water is 1.02
Which has maximum number of atoms?
a gaseous hydrocarbon gives upon combustion, 0.72 g
arrange the carbanions, (CH3)3 C, CCI3,
IUPAC name of CH3 COCH (CH3)2 is
Identify, which of the below does not possess any element of symmetry ?
Least stable conformer of cyclohexane is
The reaction intermediate produced by homolytic cleavage of a bond is called
Geometrical isomerism is possible in
The maximum number of molecules is present in
Geometry of methyl free radical is
Which is the most stable carbocation?
The IUPAC name of the following compound is
Optical isomerism is shown by
In the hydrocarbon
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