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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

✅ Correct Answer: 3

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

✅ Correct Answer: 3

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

✅ Correct Answer: 2

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

✅ Correct Answer: 4

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

✅ Correct Answer: 1

Stronger is the oxidizing agent greater is the

1. Oxidation potential
2. Redox potential
3. e.m.f of cell
4. standard reduction potential

✅ Correct Answer: 4

Which of the following can be used in laptops?

1. Silver oxide battery
2. Fuel cell
3. Nickel cadmium cell
4. Lead accumulator

✅ Correct Answer: 3

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

✅ Correct Answer: 4

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

✅ Correct Answer: 2

Nitrates of which pair gives different products on thermal decomposition

1. Na K
2. Mg Ca
3. Li Na
4. Li Ca

✅ Correct Answer: 3

Which is carnalite

1. KCI
2. NaCI
3. KCI MgCl2 6H2O
4. Na2CO3. 10H2O

✅ Correct Answer: 3

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

1. Mg > Sr
2. Ba > Mg
3. Lu > Ce
4. CI > 1

✅ Correct Answer: 2

Which one does not give borax bead test

1. Copper sulphate
2. Barium sulphate
3. Cobalt sulphate
4. Nickel sulphate

✅ Correct Answer: 2

Which one is not the use of silicones

1. Lubricant
2. Water repellent film
3. Rubber sheet
4. Medicine

✅ Correct Answer: 4

The most reactive allotropic form of phosphorus is

1. White
2. Redox potential
3. Black
4. Violet

✅ Correct Answer: 1

Chemical composition of cinnabar is

1. FeS2
2. HgS
3. PbS
4. ZnS

✅ Correct Answer: 2

Which molecule has the highest bond energy among the halogens

1. Fluorine
2. Chlorine
3. Iodine
4. Bromine

✅ Correct Answer: 2

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

✅ Correct Answer: 3

The most paramagnetic element is

1. Iron
2. Cobalt
3. Chromium
4. Manganese

✅ Correct Answer: 1

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

1. 2
2. 3
3. 4
4. 6

✅ Correct Answer: 4

Which one of the following looks odd

1. H2SO4
2. KMnO4
3. H2S
4. K2CrO4

✅ Correct Answer: 3

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

✅ Correct Answer: 2

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

1. sp3 - sp2
2. sp2 - sp
3. sp2 - sp
4. sp3 - sp2 - sp

✅ Correct Answer: 4

Vinyl acetylene combines with hydrochloric acid produces

1. Diviny1 acetylene
2. Ethylidine dichloride
3. Chloroprene
4. 1 - 3 - 3 - trichloro butane

✅ Correct Answer: 3

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

1. Phenol
2. Maleic anhydride
3. Glyoxal
4. Benzoic acid

✅ Correct Answer: 2

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

✅ Correct Answer: 1

Which one of the following will be sulphonated readily?

1. Chlorobenzene
2. Toluene
3. Nitrobenzene
4. Benzene

✅ Correct Answer: 2

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

1. HSO4-
2. Cl-
3. OH-
4. Br-

✅ Correct Answer: 3

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

✅ Correct Answer: 3

The process of fermentation involves all the enzymes except

1. Diastase
2. Invertase
3. Zymase
4. Sucrase

✅ Correct Answer: 4

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

1. n. butane
2. Ethanol
3. Ethane
4. Diethy1 ether

✅ Correct Answer: 3

Which one does not exhibit aldol condensation

1. Ethanal
2. Acetone
3. Benzaldehyde
4. Butanone

✅ Correct Answer: 3

For industrial preparation of CH3CHO catalytic promoter is

1. PdCl2
2. Cu2Cl2
3. CuCl2
4. PbCl2

✅ Correct Answer: 2

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

1. Oxalic acid
2. Succinic acid
3. Malonic acid
4. Fumaric acid

✅ Correct Answer: 3

Which of the following is not a fatty acid?

1. Propanoic acid
2. Acetic acid
3. Phthalic acid
4. Butanoic acid

✅ Correct Answer: 3

Industrial materials thermal power stations are coated with

1. Polyester resins
2. Epoxy paints
3. polyamide resins
4. Polyvinyl chloride

✅ Correct Answer: 2

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

✅ Correct Answer: 1

Chlorination of water may be harmful if the water contains

1. Ammonia
2. Dissolved oxygen
3. Carbon dioxide
4. All

✅ Correct Answer: 3

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

✅ Correct Answer: 1

Which of these gases diffuse more quickly than oxygen?

1. H2S
2. NO
3. Cl2
4. N2O

✅ Correct Answer: 2

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

✅ Correct Answer: 1

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

✅ Correct Answer: 2

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

✅ Correct Answer: 3

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

✅ Correct Answer: 4

Which statement is correct

1. PVm?T
2. P?CT
3. PM?dT
4. all above

✅ Correct Answer: 4

Under what conditions the gases deviate from the ideal behavior?

1. High temperature
2. Low temperature
3. High pressure
4. b and c

✅ Correct Answer: 4

Which one has the lowest density at room temperature?

1. Ne
2. N2
3. NH3
4. CO

✅ Correct Answer: 3

The introduction of Kelvin scale in thermometry is according to

1. Boyles law
2. Charles law
3. Daltons law
4. Grahams law

✅ Correct Answer: 2

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

✅ Correct Answer: 4

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

1. Half
2. Double
3. Same
4. None

✅ Correct Answer: 2

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