74.5g of a metallic chloride contain 35.5 g of chlorine The equivalent weight of the metal is
which is wrong IUPAC name ?
0.75g plantic chloride, a monoacid base on ignition gave 0.245g plantinum. The molecular weight of the base is
The number of oxygen atoms 4.4g of CO2 is
What volume of NH3 gas at STP would be needed to prepare 100 ml of 2.5 molal (2.5m) ammonium hydroxide solution
The correct order for homolytic bond dissociation energies (AH in kcal/mol) for CH4 (A), C2 H6 (B) and CH3 Br (C), under identical..
2.76 g of silver carbonate on being strongly heated yields a residue weighing
An element, x has the following isotopic composition l.
How many significant digits are there in 0.5?
Which has maximum number of atoms?
Chlorobenzene is o, p -directing in electrophilic substitution reaction. The directing influence is explained by
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..
If Na is avogadros number then number of valence electrons in 4.2 g of nitride icons N^3_ is
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..
The weight of a molecule of the compound C60 H1
arrange the carbanions, (CH3)3 C, CCI3,
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 same amount of zinc is treated separately with excess of sulphuric acid and excess of solution hydroxide. What will be the rat..
The number of stereoisomers obtained by bromination of trans-2-butene 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 kind of fission is favoured by sunlight?
An element, X has the following isotopic composition:
200X:90%, 190X:8.0%, 202X:2.0%
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
Identify, which of the below does not possess any element of symmetry ?
Geometrical isomerism is possible in
Least stable conformer of cyclohexane is
Optical isomerism is shown by
The correct order regarding the electronegativity of hybrid orbitals of carbon is
The maximum number of molecules is present in
Geometry of methyl free radical is
Haemoglobin contains 0.334 % of iron by weight. The molecular weight of haemoglobin is approximately 67200. The number of iron ato..
The reaction intermediate produced by homolytic cleavage of a bond is called
Number of atoms in 558.5g Fe (At. wt. 55.85) is
Which is the most stable carbocation?
In the hydrocarbon
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