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.
How many significant digits are there in 0.5?
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..
Number of moles of MnO4 required to oxidize one mole of ferrous oxalate completely in acidic medium will be :
Chlorobenzene is o, p -directing in electrophilic substitution reaction. The directing influence is explained by
If Na is avogadros number then number of valence electrons in 4.2 g of nitride icons N^3_ is
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..
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..
which is wrong IUPAC name ?
arrange the carbanions, (CH3)3 C, CCI3,
One gram of hydrogen is found to combine with 80 g of bromine the equivalent weight of calcium is
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
IUPAC name of CH3 COCH (CH3)2 is
a gaseous hydrocarbon gives upon combustion, 0.72 g
The maximum number of possible optical isomers in 1-bromo-2-methyl cyclobutane is
Which kind of fission is favoured by sunlight?
The state of hybridization of C2, C3, C5 and C6 of the hydrocarbon,
Density of a 2.05 M solution of acetic acid water is 1.02
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 has maximum number of atoms?
Geometrical isomerism is possible in
Identify, which of the below does not possess any element of symmetry ?
The maximum number of molecules is present in
Optical isomerism is shown by
Least stable conformer of cyclohexane is
Which is the most stable carbocation?
The reaction intermediate produced by homolytic cleavage of a bond is called
Geometry of methyl free radical is
The IUPAC name of the following compound is
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
The IUPAC name of
When potassium permanganate is titrated against ferrous ammonium sulphate, the equivalent weight of potassium permanganate is
The number of stereoisomers obtained by bromination of trans-2-butene is
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