0.5 mole of nitrogen gas and 0.5 mole of carbon monoxide gas at STP have same
1.Value of a
2.Mass
3.Atoms
4.Both b and C
18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to
1.?
2.5.1
3.6
4.one/fifty one
A great variety of the organic compounds is due to its property of carbon
1.Show tetravalency
2.Exhibit catenation
3.Show isomerism
4.Can form multiple bonds
At constant temperature the pressure of an ideal gas is doubled its density becomes
1.Half
2.Double
3.Same
4.None
Chemical composition of cinnabar is
1.FeS2
2.HgS
3.PbS
4.ZnS
Chlorination of water may be harmful if the water contains
1.Ammonia
2.Dissolved oxygen
3.Carbon dioxide
4.All
Ethy1 chloride on reduction in the presence of Zn/HCI produces
1.n. butane
2.Ethanol
3.Ethane
4.Diethy1 ether
For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as
1.qp = qv
2.qp < qv
3.qp > qv
4.qp = qv / 2
For industrial preparation of CH3CHO catalytic promoter is
1.PdCl2
2.Cu2Cl2
3.CuCl2
4.PbCl2
For which system does the equilibrium constant Kc has unit of (concentration)-1
1.N2+3H2 <=>2NH3
2.H2+I2 <=>2HI
3.2NO2 <=> N2H4
4.PCI5 <=> PCI3+CI2
Ideal gasses have all the following characteristics except.
1.Absence of intermolecular forces
2.Collisions among the molecules of an ideal gas are perfectly elastic
3.The molecules occupy no space
4.All of the above are correct
In 1 - pentene -4- yne the carbon exhibit hybridization
1.sp3 - sp2
2.sp2 - sp
3.sp2 - sp
4.sp3 - sp2 - sp
In the complex [Cr(OH)3(H2O)3] the coordination number is
1.2
2.3
3.4
4.6
Industrial materials thermal power stations are coated with
1.Polyester resins
2.Epoxy paints
3.polyamide resins
4.Polyvinyl chloride
Keeping in view the size of atom which is in correct order
1.Mg > Sr
2.Ba > Mg
3.Lu > Ce
4.CI > 1
Nitrates of which pair gives different products on thermal decomposition
1.Na K
2.Mg Ca
3.Li Na
4.Li Ca
Solubility product of AgCl is 2.0 x 10-10 mol2 dm-6. Maximum Concentration of Ag+1 ions in the solution is
1.2.0 x 10-10 mol dm-3
2.1.414 x 10-5 mol dm-3
3.1.0 x 10-10 mol dm-3
4.1.0 x 10-5 mol dm-3
Stronger is the oxidizing agent greater is the
1.Oxidation potential
2.Redox potential
3.e.m.f of cell
4.standard reduction potential
The common name of propane -1 3-dioic acid is
1.Oxalic acid
2.Succinic acid
3.Malonic acid
4.Fumaric acid
The introduction of Kelvin scale in thermometry is according to
1.Boyles law
2.Charles law
3.Daltons law
4.Grahams law
The most paramagnetic element is
1.Iron
2.Cobalt
3.Chromium
4.Manganese
The most reactive allotropic form of phosphorus is
1.White
2.Redox potential
3.Black
4.Violet
The process of fermentation involves all the enzymes except
1.Diastase
2.Invertase
3.Zymase
4.Sucrase
The weakest (in strength) of the following intermolecular forces is
1.Hydrogen bonding
2.Vander Waals force
3.Forces among the polar molecules
4.Ionic bond
Under what conditions the gases deviate from the ideal behavior?
1.High temperature
2.Low temperature
3.High pressure
4.b and c
Vinyl acetylene combines with hydrochloric acid produces
1.Diviny1 acetylene
2.Ethylidine dichloride
3.Chloroprene
4.1 - 3 - 3 - trichloro butane
What is the relative rate of effusion of CO and CO2?
1.CO is 1.25 times faster than CO2
2.CO is 3.75 times faster than CO2
3.CO is 1.25 times faster than CO
4.Both diffuse at the same rate
When benzene is heated in air with V2O5 at 450?C yields
1.Phenol
2.Maleic anhydride
3.Glyoxal
4.Benzoic acid
When chlorine is passed through hot solution of caustic soda the reaction is said as
1.Displacement
2.Reduction
3.Disproportionation reaction
4.Double displacement reaction
When CO2 is made to react with ethy1 magnesium iodide in dry ether followed by acid hydrolysis yields
1.Carboxylic acid
2.Ethanoic acid
3.Propanoic acid
4.Butanoic acid
When toluene reacts with chlorine in sunlight the first major product is
1.Benzy1 chloride
2.Benzal dichloride
3.O-chlorotoluene
4.O-chlorotoluene and P-chlorotoluene
Which is carnalite
1.KCI
2.NaCI
3.KCI MgCl2 6H2O
4.Na2CO3. 10H2O
Which is the unit of (K) rate constant for zero order reaction?
1.s-1
2.mol dm-3 s-1
3.mol-1 dm3 s-1
4.mol-2 dm6 s-1
Which is true about Zn-Cu galvanic cell?
1.Reduction occurs at anode
2.K+ ion transfer from salt bridge to left beaker of ZnSO4
3.Oxidation occurs at cathode
4.Anode is negatively charged
Which molecule has the highest bond energy among the halogens
1.Fluorine
2.Chlorine
3.Iodine
4.Bromine
Which of the following can be used in laptops?
1.Silver oxide battery
2.Fuel cell
3.Nickel cadmium cell
4.Lead accumulator
Which of the following is not a fatty acid?
1.Propanoic acid
2.Acetic acid
3.Phthalic acid
4.Butanoic acid
Which of the following is not considered as an intermolecular force between molecules?
1.Coordinate covalent bonds
2.Hydrogen bonds
3.Debye forces
4.London dispersion forces
Which of the following solution has the highest boiling point?
1.5.85% NaCl Solution
2.18.0 % glucose solution
3.6.0 % urea solution
4.All have same boiling point
Which of the following statements is true about plasma
1.It may be the first state of matter
2.It is not a phase transition
3.It is a conductor of electricity
4.All of the above
Which of these gases diffuse more quickly than oxygen?
1.H2S
2.NO
3.Cl2
4.N2O
Which one does not exhibit aldol condensation
1.Ethanal
2.Acetone
3.Benzaldehyde
4.Butanone
Which one does not give borax bead test
1.Copper sulphate
2.Barium sulphate
3.Cobalt sulphate
4.Nickel sulphate
Which one has the lowest density at room temperature?
1.Ne
2.N2
3.NH3
4.CO
Which one is not the use of silicones
1.Lubricant
2.Water repellent film
3.Rubber sheet
4.Medicine
Which one of the following fertilizers provides the nitrogen and phosphorus to the plant?
1.Urea
2.Calcium superphosphate
3.Diammonium phosphate
4.Potassium nitrate
Which one of the following is not a good leaving group ?
1.HSO4-
2.Cl-
3.OH-
4.Br-
Which one of the following looks odd
1.H2SO4
2.KMnO4
3.H2S
4.K2CrO4
Which one of the following will be sulphonated readily?
1.Chlorobenzene
2.Toluene
3.Nitrobenzene
4.Benzene
Which statement is correct
1.PVm?T
2.P?CT
3.PM?dT
4.all above