Que- Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is_______________?
a. 4.0 x 10-8
b. 3.2 x 10-11
c. 2.0 x 10-8
d. 4.0 x 10-12
Answer- 3.2 x 10-11
Que- The unit of molality is__________________?
a. moles dm-3
b. moles kg-1
c. gram dm-3
d. none
Answer- moles kg-1
Que- A solution can be both____________________?
a. dilute and concentrated
b. dilute and saturated
c. saturated and unsaturated
d. saturated and super saturated
Answer- dilute and concentrated
Que- Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________?
a. 6
b. 8
c. 10
d. 4
Answer- 10
Que- Which of the following elements react with steam to produce H2 gas?
a. Pd
b. Ni
c. Sn
d. All of the above
Answer- All of the above
Que- The unit of the rate constant (k) is same as that of rate of reaction________________?
a. First order reaction
b. Second order reaction
c. Zero order reaction
d. Third order reaction
Answer- Zero order reaction
Que- Acid present in acid rain may be_________________?
a. H2SO4
b. HNO3
c. both A and B
d. none of the above
Answer- both A and B
Que- Which of the following elements conduct electricity and also melts below 100°C ?
a. Aluminium
b. Sodium
c. Carbon
d. Sulphur
Answer- Sodium
Que- The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________?
a. Ethylene iodide
b. Ethylene bromide
c. Ethylene chloride
d. Ethylene fluoride
Answer- Ethylene bromide
Que- Isotopes differs in______________________?
a. arrangement of electrons in orbitals
b. position in the periodic table
c. properties depend upon mass
d. chemical properties
Answer- chemical properties
Que- The volume occupied by 1.4g CO at S.T.P is___________________?
a. 22.4 dm3
b. 2.24 dm3
c. 1.12 cm3
d. 1.12 dm3
Answer- 1.12 dm3
Que- Which of the following set has all species isoelectronic__________________?
a. F – Cl – Br
b. Li+1 – Na+1 – K+1
c. F – Ne – Na+
d. H+ – H- – H
Answer- F – Ne – Na+
Que- Water absorber used in combustion analysis is___________________?
a. 50% KOH
b. Lime water
c. CaCl2
d. Mg (CIO4)2
Answer- Mg (CIO4)2
Que- The type of filtering media used for filtration depending upon____________________?
a. Nature of reactants
b. Nature of crucible
c. Nature of product
d. Nature of precipitate
Answer- Nature of precipitate
Que- A method of separation of components from its solution using Distribution law is ___________________?
a. Sublimation
b. Crystallisation
c. Solvent extraction
d. Distillation
Answer- Solvent extraction
Que- Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is___________________?
a. one / seventeen
b. sixteen / seventeen
c. one / three
d. two / three
Answer- one / three
Que- The molecules of CO2 in dry ice form__________________?
a. Ionic crystal
b. Covalent crystal
c. Molecular crystal
d. Any type of crystal
Answer- Molecular crystal
Que- Only London dispersion forces are present among the_________________?
a. Molecules of water in liquid state
b. Atoms of helium in gaseous state at high temperature
c. Molecules of hydrogen chloride gas
d. Molecules of solid iodine
Answer- Molecules of solid iodine
Que- Quantum number values for 3p orbitals are____________________?
a. n=3 l=2
b. n=3 l=0
c. n=3 l=1
d. n=3 l=3
Answer- n=3 l=1
Que- Which specie has unpaired electrons in antibonding molecular orbitals_______________?
a. O2+2
b. N2-2
c. B2
d. O2-2
Answer- N2-2
Que- For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as___________________?
a. qp = qv
b. qp < qv
c. qp > qv
d. qp = qv / 2
Answer- qp > qv
Que- Solubility product of AgCl is 2.0 x 10-10 mol2 dm-6. Maximum Concentration of Ag+1 ions in the solution is__________________?
a. 2.0 x 10-10 mol dm-3
b. 1.414 x 10-5 mol dm-3
c. 1.0 x 10-10 mol dm-3
d. 1.0 x 10-5 mol dm-3
Answer- 1.414 x 10-5 mol dm-3
Que- Which of the following solution has the highest boiling point ?
a. 5.85% NaCl Solution
b. 18.0 % glucose solution
c. 6.0 % urea solution
d. All have same boiling point
Answer- 5.85% NaCl Solution
Que- Which of the following can be used in laptops ?
a. Silver oxide battery
b. Fuel cell
c. Nickel cadmium cell
d. Lead accumulator
Answer- Nickel cadmium cell
Que- Which is the unit of (K) rate constant for zero order reaction ?
a. s-1
b. mol dm-3 s-1
c. mol-1 dm3 s-1
d. mol-2 dm6 s-1
Answer- mol dm-3 s-1
Que- Ethy1 chloride on reduction in the presence of Zn/HCI produces___________________?
a. n. butane
b. Ethanol
c. Ethane
d. Diethy1 ether
Answer- Ethane
Que- For industrial preparation of CH3CHO catalytic promoter is_________________?
a. PdCl2
b. Cu2Cl2
c. CuCl2
d. PbCl2
Answer- Cu2Cl2
Que- Which of the following is not a fatty acid ?
a. Propanoic acid
b. Acetic acid
c. Phthalic acid
d. Butanoic acid
Answer- Phthalic acid
Que- Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ?
a. Urea
b. Calcium superphosphate
c. Diammonium phosphate
d. Potassium nitrate
Answer- Urea
Que- Chlorination of water may be harmful if the water contains_________________?
a. Ammonia
b. Dissolved oxygen
c. Carbon dioxide
d. All
Answer- Carbon dioxide
Que- The mass of one mole of electron is________________?
a. 1.008
b. 0.55
c. 0.184
d. 1.637
Answer- 0.55
Que- The number of atoms in a molecule determines________________?
a. macromolecule
b. macromolecule
c. molecularity
d. atomicity
Answer- atomicity
Que- Which element has same isotopes like palladium___________________?
a. Nickel
b. Calcium
c. Cadmium
d. Tin
Answer- Calcium
Que- A limiting reactant is one which________________?
a. is taken in lesser quantity in grams as compared to other reactants
b. is taken in lesser quantity in volume as compared to other reactants
c. gives the maximum amount of the product which is required
d. gives the minimum amount of the product under consideration
Answer- gives the minimum amount of the product under consideration
Que- A safe and more reliable method for drying the crystal is__________________?
a. Hot air currents
b. folds of filter paper
c. oven
d. Vacuum desiccator
Answer- Vacuum desiccator
Que- A real gas obeying vander waals equation will resemble the ideal gas if_______________________?
a. Both a and b are small
b. Both a and b are large
c. a is small and b is large
d. a is large and b is small
Answer- Both a and b are small
Que- Plasma is used in_________________?
a. Fluorescent bulb
b. Neon signs
c. Lasers
d. All of these
Answer- All of these
Que- Which of the following is pseudo solid_____________________?
a. CaF2
b. NaCl
c. Glass
d. Diamond
Answer- Glass
Que- Bohrs model is contradicted by__________________?
a. Plancks theory
b. Dual nature of matter
c. Heisenbergs uncertainty principle
d. All of these
Answer- Heisenbergs uncertainty principle
Que- Atomic radius can be determined by_________________?
a. X – ray diffraction
b. Spectrophotometer
c. Optical microscope
d. Electron microscope
Answer- X – ray diffraction
Que- For which system does the equilibrium constant Kc has unit of (concentration)-1__________________?
a. N2+3H2 2NH3
b. H2+I2 2HI
c. 2NO2 N2H4
d. PCI5 PCI3+CI2
Answer- 2NO2 N2H4
Que- 18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________?
a. 8
b. 5.1
c. 6
d. one/fifty one
Answer- one/fifty one
Que- Stronger is the oxidizing agent greater is the___________________?
a. Oxidation potential
b. Redox potential
c. e.m.f of cell
d. standard reduction potential
Answer- standard reduction potential
Que- Which is true about Zn-Cu galvanic cell ?
a. Reduction occurs at anode
b. K+ ion transfer from salt bridge to left beaker of ZnSO4
c. Oxidation occurs at cathode
d. Anode is negatively charged
Answer- Anode is negatively charged
Que- Nitrates of which pair gives different products on thermal decomposition___________________?
a. Na K
b. Mg Ca
c. Li Na
d. Li Ca
Answer- Li Na
Que- Keeping in view the size of atom which is in correct order___________________?
a. Mg > Sr
b. Ba > Mg
c. Lu > Ce
d. CI > 1
Answer- Ba > Mg
Que- Which one is not the use of silicones________________________?
a. Lubricant
b. Water repellent film
c. Rubber sheet
d. Medicine
Answer- Medicine
Que- Chemical composition of cinnabar is____________________?
a. FeS2
b. HgS
c. PbS
d. ZnS
Answer- HgS
Que- When chlorine is passed through hot solution of caustic soda the reaction is said as___________________?
a. Displacement
b. Reduction
c. Disproportionation reaction
d. Double displacement reaction
Answer- Disproportionation reaction
Que- In the complex [Cr(OH)3(H2O)3] the coordination number is __________________?
a. 2
b. 3
c. 4
d. 6
Answer- 6
Que- A great variety of the organic compounds is due to its property of carbon_________________?
a. Show tetravalency
b. Exhibit catenation
c. Show isomerism
d. Can form multiple bonds
Answer- Exhibit catenation
Que- Vinyl acetylene combines with hydrochloric acid produces___________________?
a. Diviny1 acetylene
b. Ethylidine dichloride
c. Chloroprene
d. 1 – 3 – 3 – trichloro butane
Answer- Chloroprene
Que- When toluene reacts with chlorine in sunlight the first major product is__________________?
a. Benzy1 chloride
b. Benzal dichloride
c. O-chlorotoluene
d. O-chlorotoluene and P-chlorotoluene
Answer- Benzy1 chloride
Que- Which one of the following is not a good leaving group ?
a. HSO4-
b. Cl-
c. OH-
d. Br-
Answer- OH-
Que- The process of fermentation involves all the enzymes except__________________?
a. Diastase
b. Invertase
c. Zymase
d. Sucrase
Answer- Sucrase
Que- Which one does not exhibit aldol condensation___________________?
a. Ethanal
b. Acetone
c. Benzaldehyde
d. Butanone
Answer- Benzaldehyde
Que- The common name of propane -1 3-dioic acid is____________________?
a. Oxalic acid
b. Succinic acid
c. Malonic acid
d. Fumaric acid
Answer- Malonic acid
Que- Industrial materials thermal power stations are coated with__________________?
a. Polyester resins
b. Epoxy paints
c. polyamide resins
d. Polyvinyl chloride
Answer- Epoxy paints
Que- Main source of organic compounds is__________________?
a. Animal
b. Fossil
c. Coal
d. Plants
Answer- Animal
Que- Hydro carbons which burn with smoky flame are called_________________?
a. Aliphatic
b. Alicyclic
c. Aromatic
d. Aldehyde
Answer- Aromatic
Que- Octane number 2 2 4-trimethyl pentane is__________________?
a. 100
b. 90
c. 80
d. 70
Answer- 100
Que- Geometric isomerism is usually found in___________________?
a. Alkanes
b. Alkenes
c. Alkynes
d. Esters
Answer- Alkenes
Que- Organic compounds that are essentially nonpolar and exhibit weak intermolecular forces have________________?
a. Low melting points
b. Low vapour pressure
c. High boiling points
d. High electrical conductivity
Answer- Low melting points
Que- According to vital force theory_______________?
a. Oorganic compounds can be synthesized from inorganic compounds
b. organic compounds cannot be synthesized from inorganic compounds
c. organic compounds can be synthesized by animals
d. organic compounds can be synthesized by plants
Answer- organic compounds cannot be synthesized from inorganic compounds
Que- A double bond consists of __________________?
a. Two sigma bonds
b. Two Pi bonds
c. One sigma and one Pi bonds
d. One sigma and two Pi bonds
Answer- One sigma and one Pi bonds
Que- Chemical properties of first member of homologous series with respect to other members are_________________?
a. same
b. different
c. depends upon number of C atoms
d. depends upon number of H atoms
Answer- same
Que- Compounds having same molecular formula but differ in structural formula are called __________________?
a. polymer
b. monomer
c. isomer
d. allotropes
Answer- isomer
Que- Organic compounds are soluble in ____________________?
a. polar solvent
b. non-polar solvent
c. alkalies
d. water
Answer- non-polar solvent
Que- Methane is used in power generation in chemical industries being a__________________?
a. natural gas
b. good caloric value
c. cheaper
d. All
Answer- cheaper
Que- The precess in which larger molecule with higher molecular weight breaks down into smaller moleucles with lower molecular weight____________________?
a. polymerization
b. pyrolysis
c. isomerism
d. no such process occurs
Answer- pyrolysis
Que- The metallic sound produced by engine due to the pre-ignition of fuel is called _______________?
a. knocking
b. reforming
c. cracking
d. a and c
Answer- knocking
Que- Which of the following can be used as anti-knocking agent ?
a. PbCl2
b. (C2H5)4 Pb
c. (C2H5)2 Pb
d. all of the above
Answer- (C2H5)4 Pb
Que- Isomerism which is present only in alkene is__________________?
a. structural isomerism
b. metamerism
c. cis-trans isomerism
d. both b and c
Answer- cis-trans isomerism
Que- Compound containing benzene ring in their structure are __________________?
a. aliphatic
b. aromatic
c. carboxylic acid
d. carbohydrates
Answer- aromatic
Que- Which of the following is an amide________________?
a. R-NH2
b. RCONH2
c. R – NH – R
d. C6H5NH2
Answer- RCONH2
Que- Only sigma bonds are present in__________________?
a. propene
b. butanoic acid
c. butanal
d. ethoxy ethane
Answer- ethoxy ethane
Que- The structure of ethyne is_________________?
a. angular
b. trigonal
c. linear
d. trigonal planar
Answer- linear
Que- The general formula of cycloalkene is __________________?
a. CnH2n
b. CnH2n+2
c. CnH2n-1
d. CnH2n-2
Answer- CnH2n-2
Que- C5H12 has the number of isomers ___________________?
a. one
b. two
c. three
d. four
Answer- three
Que- Octane number can be improved by________________?
a. Isomerization
b. Adding (C2H5)4 Pb
c. Adding (CH3)4 Pb
d. All
Answer- All
Que- Octane number 2 2 4-trimethyl pentane is________________?
a. 100
b. 90
c. 80
d. 70
Answer- 100
Que- Propene can exhibit________________?
a. cis-trans isomerism
b. geometric isomerism
c. both a & b
d. none of the above
Answer- none of the above
Que- Pentane and 2-methyl butance have the same_______________?
a. Boiling point
b. Melting point
c. Percentage composition
d. Structural formula
Answer- Percentage composition
Que- The first organic compound was synthesized in laboratory by_________________?
a. Wohler
b. Kolbe
c. Berzilius
d. Berthelot
Answer- Wohler
Que- First organic compound synthesized in laboratory was _________________?
a. tartaric acid
b. ethyl alcohol
c. methanol
d. urea
Answer- urea
Que- The property of carbon chain formation is called _________________?
a. catenation
b. hybridization
c. polymerization
d. solvation
Answer- catenation
Que- The organic compounds having very high molecular weight are called _________________?
a. carboxylic acids
b. ketones
c. aldehydes
d. polymers
Answer- polymers
Que- Rate of reactions of most organic compounds are____________________?
a. very slow
b. very fast
c. slow
d. no regular character present
Answer- slow
Que- Coal is produced after a long time decay of_________________?
a. animals
b. fossils
c. wood
d. all of the above
Answer- wood
Que- Crude oil is blackish coloured liquid produced after the decay of organic matter present between_________________?
a. earth layer
b. mountains
c. sedimentary rocks
d. rocks
Answer- sedimentary rocks
Que- At low temperature and pressure cracking can be done in presence of catalyst________________?
a. Al2O3
b. Fe2O3
c. Al2O3 and SiO2
d. Fe2O3 and SiO2
Answer- Al2O3 and SiO2
Que- Which one of the following compounds shows intense knocking ?
a. n-pentane
b. iso-heptane
c. iso-octane
d. n-heptane
Answer- n-heptane
Que- Ether functional group can be represented as ____________________?
a. OH
b. R-CO-R
c. R-O-R
d. R-COOH
Answer- R-O-R
Que- A single atom or group of atoms which gives characteristic properties to a compound is called_________________?
a. radical
b. hydrocarbon
c. functional group
d. ion
Answer- functional group
Que- 2-propanol and 1-propanol show the isomerism________________?
a. metamerism
b. functional group isomerism
c. geometric isomerism
d. position isomerism
Answer- position isomerism
Que- In sp3 hybridization the expected geometry of molecules will be__________________?
a. square planar
b. trigonal pyramidal
c. tetrahedral
d. linear
Answer- tetrahedral
Que- In cyano group the carbon atom shows which kind of hybridization___________________?
a. sp2
b. sp
c. sp3
d. none of the above
Answer- sp
Que- the fractional distillation of petroleum produces gasoline up to ________________?
a. 10%
b. 15%
c. 20%
d. 30%
Answer- 20%
Que- Which is not heterocyclic compound _______________?
a. Furan
b. Thiophene
c. Aniline
d. Pyridine
Answer- Aniline
Que- Which one is not state function ________________?
a. Internal energy
b. Enthalpy
c. Gibbs free energy
d. Work
Answer- Work