>>Enzymes belong to which class of compound———–Proteins————— right answer)
>> The helical structure of protein is stabilized by ——–Hydrogen———-bond. right answer)
>> Enzymes have…Polypeptide…………………..unit
Polypeptide right answer)
HYDROCARBON
>> Function of enzymes in biological system is……….
Catalyze biochemical action right answer)
>> Night blindness is produce due to deficiency of …
……..VITAMIN A right answer)
>> Zwitter ion exist in which of the following
a)Alanine right answer)
b)Glycine HCL
c) Both a and b
d)None
>> IR determine ——————–bond
a)kind of bond nature of bond right answer)
c)hydrocarbon
>> Marsh gas is ………………
…CH4 right answer)
>> Solvent used in IR Spectroscopy is………………..
a)CCL4 right answer)
B)CH30H
C)WATER
D)CH3CH2OH
>> 1700——1760 PEAK In IR Spectroscopy is…………
…Carbonyl group right answer)
>> NMR use ——————source of radiation
a)UV
B)Radio waves right answer)
micro waves
d)visible rays
>> Existence of nucleus is confirmed by………….. Millikian method or
Alpha scattering by thin metal foil right answer)
>> What is fase about electron
(Not conform but it should be d)
Electron is a particle
Wave is associated with electron
When electron jump from orbital its energy c..
oriented by magnetic field
>> Which one is occur in whole number always
Atomic number right answer)
Molecular weight
Equivalent weight
>> A metal has an electronic configuration is M+2 has 2,8,14 and its atomic weight is 56.the
number of neutron is ………………
30) right answer)
>> Least soluble in Water Is
Ethano
l b. Phenol
Carboxylic acid
benzene right answer)
>> The EAN Value of Ni(CO)4 is
a)36 right answer)
b)54
>> The ration of C:Si in their neutron ration with atoic weight having 12 and 28 respectively
(3:7) right answer)
>> Phenolphthalein is colourless in acidic medium due to __
__Benzenoid form right answer)
>> The weakest base is
Hb)
Cl- right answer)
HCO3-
OH-
>> Which compound declourize KMnO4 solution but not give test with AgNO3 solution
Ethylene right answer)
Acetylene
Ethane
>> Which one of the following does not give Lassaignes test for nitrogen
Phenylhydrazine
Glycine
Urea
Azobenzene right answer)
>> which one the following compound does not explode:
trinitro toluene
b)2-amine toluene (I think this is not conform)
>>. Strongest oxidizing agent is supported by———-
Low dissociation energy
hIgh electron affinity right answer)
low ionization energy
>> the order of oxidizing agent is
I<Br<Cl<F
inversion of cane sugar into glucose and fructose is ?(not conform)
a)slow process
fast process
b)spontaneous process
instaneous process
>>. rate of chemical reaction is———–when it proceed
decrease right answer)
increase
>> when reactants are added then rate of reaction is
(not conform)
decrease
increase right answer)
>> which one of the following metal has highest electrical conductivity
gold
silver right answer)
aluminium
copper
>> preparation of ice cream is
colloids
excessive cooling right answer)
Coagulation
peptization
>> colloids are example of —————equilibrium
homogenous equilibrium
heterogeneous equilibrium ( right answer)
suspension
none of these
pure water is nonconductor of electricity
water is neutral
water is almost unionized ( right answer)
water is completely ionized
>> which one of the following aqueous solution conductor of electricity
Glucose
HCl( right answer)
>> Which is correct statement (not confirm my answer is c)
Catalyst increase the rate of forward reaction
Catalyst increase the rate of backward reaction
Catalyst influence on the rate of forward reaction and backward reaction equally right answer)
Catalyst decrease the rate of forward reaction
>> Pick a right statement:
Order of reaction is in fraction ( right answer)
>> The unit for formation of ammonia from N2+3H………..>2NH3
Mol-2.lit2( right answer)
>> The unit of active mass is———–
Gram atom per litre ( right answer)
Gram molecule per litre
Gram litre
>> colloidal particles are
negative
positive
neutral (my answer is neutral not confirm)
may be positive or negative
>> who classify element first
lother meyer
doberiener
newlands
mendleevs
>> molecularity of reaction is always in ………………whole number ( right answer)
>> the chemical which destroy ozone layer is CFCl3 ( right answer)
>> Physisorption occur at —————temperature low ( right answer)
>> if dispersion medium is gas its example is
Aerosol( right answer)
>>. pressure vs temperature equation is called (not conform answer)
Langmuir equation
Fredluck equation
Bet equation
None of these
>> Resonation structure cannot be separated (right answer)
>> Nickel is use in the hydrogenation of vegetable ghee (right answer)
>> Colloids shows Brownian movement( right answer)
>>. Methyl group is 0rtho and p-direction because……..
(Not conform my answer is all ob above)
E donating effect of methyl group inductively
E donating effect of methyl group resonatingly
E donating effect of methyl group hyperconjugation ( right answer)
All of above
>> Chloro group is ortho and para but electron withdrawing ( right answer)
>> To avoid maximum yield For a Reversible reaction to occur
Glass vessel
Closed vessel( right answer)
Open vessel
>>. In benzene, there are —————type of carbon atom
One type ( right answer)
Two type
Three type
Four type
In benzene, the number of pi electron is
3 e
4e
6e ( right answer)
4e
>> In benzene , all carbon atoms are————-hybridization
Sp3
Sp2 ( right answer)
Sp
None
>> According to lechatlier principle in a reversible reaction between solid and liquid, the amount of
heat added
(Not conform answer)
Decrease the concentration of solid
increase the concentration of solid
Decrease the concentration of liquid
Decrease the concentration of liquid
>> The fastest reaction occur in which of the following:
Rusting of iron
Burning of coal
The AgCl formation by the reaction of AgNo3 and Nacl ( right answer)
>> The amount of energy required to separate nucleons is called
Ionization energy
Binding energy ( right answer)
>> The enthalpy of heat of formation of sodium ion from its atom is known as
Enthalpy of atomization
First ionization energy (not conform)
Enthalphy of combustion
>> The brown vapour is formed of which element when MnO2 and conc. H2SO4 is added in them
NO2 ( right answer)
CL2
Br2
I2
Stability of nucleus is due to
Proton and neutron ( right answer)
Proton and electron
Neutron and electron
>> Difference between particle mass and real mass is called…………
Mass defect ( right answer)
>> A gas has a volume of 2 litre at S.T.P at constant pressure, the new volume is 4 litre at which
temperature:
50c
100c
>> The difference between the crystalloids and colloids
Particle size ( right answer)
Colloidal size
Diffusion
True solution
>> The gas which shows deviation from ideal behavior is:
Helium
Hydrogen
Ammonia ( right answer)
Trichloro methane
>> Some substance shows scattering of light but they can pass through ordinary filter paper
is………….
Colloids ( right answer)
Suspension
True solution
None
>> In the lime kiln , CaCO3………………>CaO+CO2 proceed to complete because………..
CO2 ESCAPPE
CaO remove
Low Temperature
High Pressure
>> Which one of the following equation is not affected by change in pressure
1/2N2+1/2O2………..>NO ( right answer)
P2O5……………..>P2O+O2
N2+3H2…………….>2NH3
>> A Reaction approaches go farthest completions
K=102
K=101
K=10
K=10-2
>> Isothermal thermal system is one in which
DELTA T=0 ( right answer)
DELTA E=W
V=0
E=0
>> Temperature of the system decreases in
adiabatic expansion ( right answer)
adiabatic compression
>> System in which no change in temperature is
Isochoric
isobaric
isothermic ( right answer)
>>. Cyclic structure of benzene is given by
Kekule( right answer)
Doberiener
>> Which is least soluble in water
Ethanol
Benzene ( right answer)
Benzoic acid
Phenol
>> Heterogeneous catalysis is based on
Adsorption ( right answer)
Absorption
Sorption
Desorption
>> Entropy of the unive rse is
Always increasing ( right answer)
Decreasing
Constant
>> Which indicator is not used in conical flask
Self indicator
External indicator ( right answer)
Internal indicator
Mixed indicator
>> Toluene is prepared from benzene
Fridel craft reaction ( right answer)
Perkin reaction
Wurtz reaction
>> Catalyst used in fridel craft alkylation is
AlCl3 ( right answer)
BFCl3
>> Order of reaction is………
Can be determined from equation
Can be determined from experiment ( right answer)
>> Oxidation number of P in KH2PO2 IS
+1 ( right answer)
+3
+5
+2
>> Molten KCl conduct electricity because of
Free ions ( right answer)
Free electron
>> which individual units loose identity
Complex salts right answer)
Simple salts
Compound salts
Double Salt
>> When a multidemential ligand is surrounded it is known as
Coordination sphere
Coordination complex
>> Group no. represents
Same electronic configuration
same number of electron in valance shell( right answer)
Chelates ( right answer)
>> Entropy decreases in melting of ice rusting of iron
>> In this reaction 6NaOH+3Cl2……………5NaCl+NaClO3+3H2O
Chlorine is reduced
Chlorine is oxidized
Disproportionate reaction
>> Aqueous solution is electrical conductor MgCl2
>> According to lewis concept,
Bases are electron pair donor
>> According to lowry-bronsted concept
Bases are proton acceptor
>> Which one of the following aqueous solution of oxide and chloride give same test with litmus
solution.
Phosphorous
Sodium
Magnesium
>> The element of group 1B is known as coinage metal.
>> Oxidation of which gives positive DNP but not Fehling’s test
CH3CH2CH2CH2OH
CH3CH (OH)CH2CH3
CH3CH (CH3)CH2CH2OH
(CH3)3COH
>> Product of hydrolysis of CH3CO2C3H7 with NaOH gives
CH3COONa +C3H7OH
>> Flourescene, rhodamine, are example of—————indicators.
Acid base indicator
Adsorption indicator
Absorption indicator
>> Evaporation causes a change in entropy………