Que- The process of fermentation of starch involve many enzymes the sequence of enzymes used are____________________?
a. Diastase-maltase-zymase
b. Zymase-maltase-diastase
c. Maltase-diastase-zymase
d. Diastase-zymase-maltase
Answer- Diastase-maltase-zymase
Que- K2Cr2O7/H2SO4 generate____________________?
a. Oxygen
b. Hydrogen
c. Nascent oxygen[O]
d. Nascent hydrogen[H]
Answer- Nascent oxygen[O]
Que- Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate ?
a. Primary alcohol
b. Secondary alcohol
c. Tertiary alcohol
d. All of above
Answer- Tertiary alcohol
Que- Which compound is also known by the name of carbolic acid ?
a. C2H2OH
b. H2CO3
c. C6H5OH
d. H3PO3
Answer- C6H5OH
Que- Heating phenol with Zn will yield_________________?
a. Benzene
b. Benzoic acid
c. Phenoxide
d. Cyclohexane
Answer- Benzene
Que- Treating phenol with formaldehyde in the presence of dilute base forms Bakelite. The process involved is_________________?
a. oxidation
b. elimination
c. condensation polymerization
d. additional polymertization
Answer- condensation polymerization
Que- Ethanol can be converted into ethanoic acid by_________________?
a. Hydrogenation
b. Hydration
c. Oxidation
d. Fermentation
Answer- Oxidation
Que- Methanol can be obtained from_________________?
a. water gas
b. destructive distillation of wood
c. methane
d. all
Answer- all
Que- Absolute alcohol is obtained when rectified spirit is treated with__________________?
a. Ca(OH)2
b. CaCO3
c. CaCl2
d. CaO
Answer- CaO
Que- Phenol was isolated by Runge from________________?
a. vegetable oil
b. coaltar
c. wood
d. none of these
Answer- coaltar
Que- The hydrogenation of phenol in the presence of Ni and heat gives_________________?
a. cyclohexane
b. n – hexane
c. 1 – hexanol
d. cyclohexanol
Answer- cyclohexanol
Que- Ethanol and methanol can be distinguished by a__________________?
a. Iodoform test
b. Lucas test
c. Benedicts test
d. Tollens test
Answer- Iodoform test
Que- Which one of the following alcohol has greater boiling point___________________?
a. ethanol
b. ethylene glaycol
c. glycerol
d. methanol
Answer- glycerol
Que- Water gas heated at 450?C and 200 atm pressure in the presence of ZnO+Cr2O3 will produce________________?
a. methanol
b. methanol
c. carbonic acid
d. methane
Answer- methanol
Que- The formula of starch is__________________?
a. C12H22O11
b. C6H10O5
c. (C6H10O5)n
d. C6H12O6
Answer- (C6H10O5)n
Que- The rectified spirit contains________________?
a. 12% alcohol
b. 90% alcohol
c. 95% alcohol
d. 100% alcohol
Answer- 95% alcohol
Que- The oxidation of isopropyl alcohol will yield___________________?
a. propane
b. Propanol
c. Propanone
d. Propanoic acid
Answer- Propanone
Que- The distinction test for primary secondary and tertiary alcohol required to react each of them is_________________?
a. Cone. HCI and anhydrous SOCl2
b. Cone. HCI and anhydrous CaCl2
c. Cone. HCI and anhydrous PCl2
d. Cone. HCI and anhydrous ZnCl2
Answer- Cone. HCI and anhydrous ZnCl2
Que- The given dissociation constant (Ka) value 1.3×10-10 is of_________________?
a. Alcohol
b. Acetic acid
c. Water
d. Phenol
Answer- Phenol
Que- When phenol is heated with concentrated nitric acid the product is________________?
a. Picric acid
b. o-nitrophenol
c. 1 3 5 -trinitro benzene
d. p-nitrophenol
Answer- Picric acid
Que- Which compound shows hydrogen bonding ?
a. C2H6
b. C2H5Cl
c. CH3OCH3
d. C2H5OH
Answer- C2H5OH
Que- Methyl alcohol is not used__________________?
a. As a solvent
b. As an antifreezing agent
c. As a substitute for petrol
d. For denaturing of ethyl alcohol
Answer- As a substitute for petrol
Que- An alcohol which can be prepared by fermentation is_________________?
a. CH3OH
b. C3H7OH
c. CH3 – CH2 – OH
d. C6H5OH
Answer- CH3 – CH2 – OH
Que- When alcohol reacts with phosphorous halides it geive____________________?
a. alkyl halides
b. alkyl amine
c. alkanes
d. alkynes
Answer- alkyl halides
Que- Which one of the following compound does not have – OH group___________________?
a. ethylene glycol
b. glycerol
c. picric acid
d. ethyl acetate
Answer- ethyl acetate
Que- Ethers show functional group isomerism with __________________?
a. aldehydes
b. ketones
c. alcohols
d. carboxylic acid
Answer- alcohols
Que- Which one of the following is also known as lactic acid ?
a. 3-Hydroxy propanoic acid
b. 2-Hydroxy propanoic acid
c. 2-hydroxy butanoic acid
d. 3-hydroxy butanoic acid
Answer- 2-Hydroxy propanoic acid
Que- The easy way of balancing the chemical equation is_________?
a. according to atom’s atomic number.
b. According to atom’s atomic mass.
c. First we balance Metal than non-metal than Hydrogen than Oxygen.
d. None of the above
Answer- First we balance Metal than non-metal than Hydrogen than Oxygen.
Que- Which of the following noble gases is not present in atmosphere?
a. Argon
b. Helium
c. Radon
d. Xenon
Answer- Radon
Que- Which of the following noble gases is abundant in air?
a. Neon
b. Helium
c. Argon
d. Methane
Answer- Argon
Que- Which law states that “equal volumes of all gases, at the same temperature and pressure, have the same number of molecules?
a. Boyle’s law
b. Charles’ law
c. Gay-Lussac’s law
d. Avogadro’s law
Answer- Avogadro’s law
Que- Which law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature?
a. Charles’ Law
b. Avogadro’s Law
c. Graham’s Law
d. Boyle’s law
Answer- Charles’ Law
Que- Which law states that the rate of the effusion of a gas is inversely proportional to the square root of its density?
a. Graham’s Law
b. Gay-Lussac’s law
c. Boyle’s law
d. None of these
Answer- Graham’s Law
Que- The valency of carbon Atom is __________ ?
a. 1
b. 2
c. 3
d. 4
Answer- 4
Que- What is the Chemical formula of Zinc Hydroxide _________ ?
a. Zn(OH)2
b. ZNO2
c. Zn2(OH)3
d. ZnOH
Answer- Zn(OH)2
Que- Permanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ?
a. Zeolites
b. Sulphonides
c. Lime
d. Nitrates
Answer- Zeolites
Que- Which among the following is not a property of Ionic bond _________?
a. Sharing of electrons
b. Transfer of electrons
c. Losing of electrons
d. Gain of electrons
Answer- Sharing of electrons
Que- Sum of protons and neutrons in an atom gives off _________ ?
a. Nucleon numbera
b. Mass number
c. Atomic number
d. Both A and B
Answer- Both A and B
Que- What is the molecular weight of Ammonia (NH3) ________ ?
a. 17.031 g/mol
b. 18.031 g/mol
c. 19.031 g/mol
d. 27.033 g/mol
Answer- 17.031 g/mol
Que- The absolute value of charge on electron was determined by ________ ?
a. J.J.Thomson
b. Chadwick
c. Rutherford
d. Robert Millikan
Answer- Robert Millikan
Que- The discovery of neutron became very late because _______ ?
a. It does not carry any charge
b. It does not move
c. It is a fundamental particle
d. It is present in nucleus
Answer- It does not carry any charge
Que- What is the molecular formula for Nitric acid ________ ?
a. HNO2
b. HNO3
c. HN2O2
d. H2NO4
Answer- HNO3
Que- What is the molecular Weight of Nitric acid (HNO3 ) ?
a. 63.012 g/mol
b. 65.012 g/mol
c. 70.012 g/mol
d. 81.011 g/mol
Answer- 63.012 g/mol
Que- The Branch of chemistry dealing with brewing and distilling is called _______ ?
a. Zygology
b. Zymology
c. Zymurgy
d. Zootaxy
Answer- Zymurgy
Que- The science of fermentation is called _______ ?
a. Zygology
b. Zymology
c. Zymurgy
d. Zootaxy
Answer- Zymology
Que- The reciprocal of the coefficent of viscosity is called__________?
a. Density
b. Specific gravity
c. Fluidity
d. Absorbance
Answer- Fluidity
Que- For a given mass of a gas at constant temperature, if the value V becomes 3 times, the pressure will becomes__________?
a. 3P
b. P/3
c. 3P/T
d. 6P
Answer- P/3
Que- A theoretical link between quantum mechanics and thermodynamics is_________?
a. Electrchemistry
b. Matrix mechanics
c. Statistical thermodynamics
d. Soectroscopic analysis
Answer- Statistical thermodynamics
Que- Stainless steel contains___________?
a. Fe+Cr+Ni
b. Fe+Ni+Cu
c. Fe+ Cr+Cu
d. Cu+C+Ni
Answer- Fe+Cr+Ni
Que- Carbon in wrought iron is present as_________?
a. Silicon carbide
b. Iron carbide
c. Graphite
d. Partly as iron carbide and partly as graphite
Answer- Iron carbide
Que- If steel is heated to a temperature well below red heat and is then cooled slowly, the process is called_________?
a. Annealing
b. Quenching
c. Tempering
d. Nitriding
Answer- Annealing
Que- The substance used in cancer therapy is___________?
a. Fe
b. Co
c. Ni
d. Rn
Answer- Co
Que- Transition elements, in general, exhibit the following properties, except one. Name that property?
a. Variable oxidation state
b. Natural Radioactivity
c. Tendency to form complexes
d. Formation of alloys
Answer- Natural Radioactivity
Que- Which of the following alloys contain(s) Cu and Zn?
a. Bronze
b. Brass
c. Gun-metal
d. Type metal
Answer- Brass
Que- Which of the following is soluble in water?
a. AgF
b. AgCl
c. AgBr
d. AgI
Answer- AgF
Que- The maximum oxidation shown by manages is_________?
a. +2
b. +4
c. +5
d. +7
Answer- +7
Que- Colour in transition metal compounds is attributed to____________?
a. Small sized metal ions
b. Absorption of light in UV region
c. Complete ns sub-shell
d. Incomplete (n-1) d sub-shell
Answer- Incomplete (n-1) d sub-shell
Que- Which of the following statements is false about transition metals?
a. They form complexes
b. They show variable valency
c. All transition metal compounds are paramagnetic
d. They form coloured ions
Answer- All transition metal compounds are paramagnetic
Que- The by-product of the process of Saponification is___________?
a. Methanol
b. Glycol
c. Glycerol
d. Sodium hydroxide
Answer- Glycerol
Que- Polyethylene Glycols are used in the preparation of which type of detergents?
a. Cationic detergents
b. Anionic detergents
c. Non-ionic detergents soap
d. All of above
Answer- Non-ionic detergents soap
Que- _____________ surfactants perform well over a wide range water hardness and PH?
a. Anionic
b. Cationic
c. Nonionic
d. Neutral
Answer- Nonionic
Que- Commercial detergents contain mainly _____________?
a. RCOON
b. RONa
c. RSNa
d. ROsO3Na Muhammad Ali Kunbhar
Answer- RCOON
Que- Which one of the following is caustic potash?
a. NaOH
b. KOH
c. NaCl
d. NaBH4
Answer- KOH
Que- The carbon-carbon bond strength is maximum in__________?
a. CH3CH3
b. CH2=CH2
c. Benzene
d. Cyclohexane
Answer- CH3CH3
Que- Which of the following effects best explains that o-nitrophenol is insoluble in water?
a. Inductive effect
b. Resonance effect
c. Intermolecular H-bonding
d. Isomeric effect
Answer- Intermolecular H-bonding
Que- Which one of the following is most acidic?
a. Phenol
b. P-nitrophenol
c. O-nitrophenol
d. M-nitrophenol
Answer- P-nitrophenol
Que- Chlorine Cl when attached to benzene has________?
a. +I and +R effect
b. -1 and +R effect
c. +1 and -R effect
d. -I and -R effect
Answer- -1 and +R effect
Que- The criteria for aromaticity is presence of_________?
a. Unsaturations
b. Cyclic structure
c. Presence of 4nπ electrons
d. Presence of 4n+2Ï€ electrons
Answer- Presence of 4n+2Ï€ electrons
Que- The bond angle between hybrid orbitals in methane CH3 is___________?
a. 115.5°
b. 109.5°
c. 105. 7°
d. 180°
Answer- 109.5°
Que- The bond length of C=C is___________?
a. 1.20A°
b. 1.34A°
c. 1.54A°
d. 1.68A°
Answer- 1.68A°
Que- The stationary and mobile phases in paper chromatography are____________?
a. Liquid/liquid
b. Solid/liquid
c. Liquid/solid
d. Liquid/gas
Answer- Solid/liquid
Que- Beillstein test is used for________?
a. Cl
b. N2
c. CO2
d. CO
Answer- Cl
Que- Presence of nitrogen in organic compounds is tested as__________?
a. Nitrogen gas
b. NH3
c. CN‾
d. NO
Answer- CN‾
Que- The molar mass of an organic acids is determined by____________?
a. Depression of freezing point
b. Volumetric method
c. Victor Meyer’s method
d. Osmosis method
Answer- Volumetric method
Que- The IUPAC suffix used for _______ NC group?
a. Cyanide
b. Isocyanides
c. Nitrile
d. Carbylamines
Answer- Nitrile
Que- The IUPAC name of ethylene oxide is__________?
a. Epoxy methane
b. Oxoethene
c. Methoxymethane
d. Oxirane
Answer- Oxoethene
Que- The IUPAC name of HCONH2 is___________?
a. Methanamide
b. Methanoylamine
c. Aminoethanol
d. Formanide
Answer- Methanamide
Que- The compound (CH3)3COH according to IUPAC is known as ___________?
a. Tert-Butanol
b. 2,2-Dimethyl-propanol
c. Tert Alcohol
d. 1,1- Diethylethanol
Answer- 2,2-Dimethyl-propanol
Que- The PH of the 0.0032 M H2SO4 is__________?
a. 3.2
b. 4.0
c. 2.198
d. 1.0
Answer- 3.2
Que- The PH of the 1.3 × 10-4 NH4Cl is__________?
a. 1.3
b. 4.0
c. 2.886
d. 3.886
Answer- 3.886
Que- The PH of milk is __________?
a. 6.0
b. 6.5
c. 7.0
d. 7.5
Answer- 6.5
Que- The PH of Tears is __________?
a. 7.0
b. 7.4
c. 7.8
d. 8.2
Answer- 7.4
Que- The PH of pure water at 25°C, kw=1×10-4____________?
a. 0
b. 7
c. 14
d. None of above
Answer- 7
Que- When 0.01 moles of NaOH are added to a buffer solution, its PH changes from 4.745 to 4.832. What is its?
a. 0.115
b. 0.900
c. 0.015
d. 0.215
Answer- 0.115
Que- Alpha particles can be detected by using___________?
a. Gold foils
b. Barium sulphate
c. Zinc sulphide screen
d. Thin Aluminium sheet
Answer- Zinc sulphide screen
Que- Which one of the following is the correct sequence according to atomic weights?
a. Fe>Co> Ni
b. Co > Ni > Fe
c. Ni> Co> Fe
d. Co >Fe>Ni
Answer- Co > Ni > Fe
Que- Generally the limit of visible spectrum is__________?
a. 1000 to 300 A°
b. 3800 to 7600 A°
c. 8000 to 10,000 A°
d. 12,000 to 15,000 A°
Answer- 3800 to 7600 A°
Que- If R is the Rydberg constant for hydrogen, then wave-number of the second line in the Lyman series is _________?
a. 2 R
b. R/2
c. 3R/4
d. R/4
Answer- 3R/4
Que- Magnetic quantum number specifies___________?
a. Size of orbitals
b. Shape of orbitals
c. Orientation of orbitals
d. All of the above
Answer- Orientation of orbitals
Que- Azimuthal quantum number defines___________?
a. e/m ratio of an electron
b. Spin of an electron
c. Angular momentum of an electron
d. Magnetic momentum of an electron
Answer- Angular momentum of an electron
Que- The energy of one mole of photons of radiation, whose frequency is 4×10 14 Hz, is ___________?
a. 159.6kJ
b. 135.5 KJ
c. 110.5 KJ
d. 80.4 KJ
Answer- 159.6kJ
Que- Which of the following gases shows more ideal behaviour at 0°C___________?
a. H2
b. CH4
c. He
d. NH3
Answer- He
Que- In a closed vessel, a gas is heated from 300K to 600 K. The kinetic energy becomes__________?
a. Double
b. Same
c. Half
d. Four times
Answer- Double
Que- Pressure remain constant, at which temperature the volume of gas becomes twice of what it is at 0°C?
a. 546 °C
b. 546 K
c. 200°C
d. 273 K
Answer- 546 K
Que- The density of a gas is 1.964 g dm-3 at 273 K and 76 cm Hg. The gas is _________?
a. CH4
b. CO2
c. C2H4
d. Xe
Answer- CO2
Que- Which of the following haloalkane is hydrolysed by SN1 mechanism?
a. CH3Br
b. CH3CH2Br
c. CH3CH2CH2Br
d. (CH3)3CBr
Answer- (CH3)3CBr
Que- Hydrocarbon is formed when Grignard reagent is treated with___________?
a. H2O
b. CH3OH
c. Both a and b
d. None of the above
Answer- H2O
Que- Grignard reagent gives carboxylic acid with____________?
a. CO2
b. CH3CHO
c. COC2
d. HCN
Answer- CO2
Que- The law of traids is applicable to__________?
a. Li, Be, B
b. F, Cl, Br
c. Cl, Br, I
d. Na, K, Rb
Answer- Cl, Br, I
Que- The concept of telluric helix was developed by___________?
a. Lother Meyer
b. A.E de Chancourtois
c. Newland
d. Dobereiner
Answer- A.E de Chancourtois