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..
What volume of NH3 gas at STP would be needed to prepare 100 ml of 2.5 molal (2.5m) ammonium hydroxide solution
An element, x has the following isotopic composition l.
Chlorobenzene is o, p -directing in electrophilic substitution reaction. The directing influence is explained by
Number of moles of MnO4 required to oxidize one mole of ferrous oxalate completely in acidic medium will be :
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..
If Na is avogadros number then number of valence electrons in 4.2 g of nitride icons N^3_ is
The weight of a molecule of the compound C60 H1
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
arrange the carbanions, (CH3)3 C, CCI3,
The state of hybridization of C2, C3, C5 and C6 of the hydrocarbon,
The maximum number of possible optical isomers in 1-bromo-2-methyl cyclobutane is
An element, X has the following isotopic composition:
200X:90%, 190X:8.0%, 202X:2.0%
Haemoglobin contains 0.334 % of iron by weight. The molecular weight of haemoglobin is approximately 67200. The number of iron ato..
Which kind of fission is favoured by sunlight?
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
a gaseous hydrocarbon gives upon combustion, 0.72 g
Which has maximum number of atoms?
Identify, which of the below does not possess any element of symmetry ?
IUPAC name of CH3 COCH (CH3)2 is
The maximum number of molecules is present in
Least stable conformer of cyclohexane is
Geometrical isomerism is possible in
The reaction intermediate produced by homolytic cleavage of a bond is called
Geometry of methyl free radical is
Which is the most stable carbocation?
Optical isomerism is shown by
The IUPAC name of the following compound is
which is wrong IUPAC name ?
The correct order regarding the electronegativity of hybrid orbitals of carbon is
In the hydrocarbon
The drug which is used for treating AIDS victims is
When potassium permanganate is titrated against ferrous ammonium sulphate, the equivalent weight of potassium permanganate is
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