Biology/Biology MCQ Question - Diagnostic Test Sample Test,Sample questions

Question:
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


Question:
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


Question:
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


Question:
At constant temperature the pressure of an ideal gas is doubled its density becomes

1.Half

2.Double

3.Same

4.None


Question:
Chemical composition of cinnabar is

1.FeS2

2.HgS

3.PbS

4.ZnS


Question:
Chlorination of water may be harmful if the water contains

1.Ammonia

2.Dissolved oxygen

3.Carbon dioxide

4.All


Question:
Ethy1 chloride on reduction in the presence of Zn/HCI produces

1.n. butane

2.Ethanol

3.Ethane

4.Diethy1 ether


Question:
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


Question:
For industrial preparation of CH3CHO catalytic promoter is

1.PdCl2

2.Cu2Cl2

3.CuCl2

4.PbCl2


Question:
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


Question:
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


Question:
In 1 - pentene -4- yne the carbon exhibit hybridization

1.sp3 - sp2

2.sp2 - sp

3.sp2 - sp

4.sp3 - sp2 - sp


Question:
In the complex [Cr(OH)3(H2O)3] the coordination number is

1.2

2.3

3.4

4.6


Question:
Industrial materials thermal power stations are coated with

1.Polyester resins

2.Epoxy paints

3.polyamide resins

4.Polyvinyl chloride


Question:
Keeping in view the size of atom which is in correct order

1.Mg > Sr

2.Ba > Mg

3.Lu > Ce

4.CI > 1


Question:
Nitrates of which pair gives different products on thermal decomposition

1.Na K

2.Mg Ca

3.Li Na

4.Li Ca


Question:
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


Question:
Stronger is the oxidizing agent greater is the

1.Oxidation potential

2.Redox potential

3.e.m.f of cell

4.standard reduction potential


Question:
The common name of propane -1 3-dioic acid is

1.Oxalic acid

2.Succinic acid

3.Malonic acid

4.Fumaric acid


Question:
The introduction of Kelvin scale in thermometry is according to

1.Boyles law

2.Charles law

3.Daltons law

4.Grahams law


Question:
The most paramagnetic element is

1.Iron

2.Cobalt

3.Chromium

4.Manganese


Question:
The most reactive allotropic form of phosphorus is

1.White

2.Redox potential

3.Black

4.Violet


Question:
The process of fermentation involves all the enzymes except

1.Diastase

2.Invertase

3.Zymase

4.Sucrase


Question:
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


Question:
Under what conditions the gases deviate from the ideal behavior?

1.High temperature

2.Low temperature

3.High pressure

4.b and c


Question:
Vinyl acetylene combines with hydrochloric acid produces

1.Diviny1 acetylene

2.Ethylidine dichloride

3.Chloroprene

4.1 - 3 - 3 - trichloro butane


Question:
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


Question:
When benzene is heated in air with V2O5 at 450?C yields

1.Phenol

2.Maleic anhydride

3.Glyoxal

4.Benzoic acid


Question:
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


Question:
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


Question:
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


Question:
Which is carnalite

1.KCI

2.NaCI

3.KCI MgCl2 6H2O

4.Na2CO3. 10H2O


Question:
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


Question:
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


Question:
Which molecule has the highest bond energy among the halogens

1.Fluorine

2.Chlorine

3.Iodine

4.Bromine


Question:
Which of the following can be used in laptops?

1.Silver oxide battery

2.Fuel cell

3.Nickel cadmium cell

4.Lead accumulator


Question:
Which of the following is not a fatty acid?

1.Propanoic acid

2.Acetic acid

3.Phthalic acid

4.Butanoic acid


Question:
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


Question:
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


Question:
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


Question:
Which of these gases diffuse more quickly than oxygen?

1.H2S

2.NO

3.Cl2

4.N2O


Question:
Which one does not exhibit aldol condensation

1.Ethanal

2.Acetone

3.Benzaldehyde

4.Butanone


Question:
Which one does not give borax bead test

1.Copper sulphate

2.Barium sulphate

3.Cobalt sulphate

4.Nickel sulphate


Question:
Which one has the lowest density at room temperature?

1.Ne

2.N2

3.NH3

4.CO


Question:
Which one is not the use of silicones

1.Lubricant

2.Water repellent film

3.Rubber sheet

4.Medicine


Question:
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


Question:
Which one of the following is not a good leaving group ?

1.HSO4-

2.Cl-

3.OH-

4.Br-


Question:
Which one of the following looks odd

1.H2SO4

2.KMnO4

3.H2S

4.K2CrO4


Question:
Which one of the following will be sulphonated readily?

1.Chlorobenzene

2.Toluene

3.Nitrobenzene

4.Benzene


Question:
Which statement is correct

1.PVm?T

2.P?CT

3.PM?dT

4.all above


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