| 1 |
Collagen contains high percentage of
|
A. Glycine
B. Tryptophan
C. Phenyl Alanine
D. Serine
|
| 2 |
Which one among the following is not a good leaving group
|
A. HSO4-
B. CI-
C. OH-
D. Br-
|
| 3 |
Alpha helix and beta pleated sheath are secondary structures of protein which are maintained by
|
A. dipole forces
B. non-polar interactions
C. ionic bonds
D. Hydrogen bonds
|
| 4 |
Soaps are basically salts of
|
A. Glycerol
B. Triglyceride
C. Fatty acid
D. Fat
|
| 5 |
Which of the following test is not given by aldehvde
|
A. 2. 4 DNPH test
B. NaHSO3 test
C. Tollen's test
D. Sodium nitroprusside test
|
| 6 |
When acid is added to an amino acid, which one of the following will act as a base.
|
A. NH3-
B. COO-
C. H+
D. R group
|
| 7 |
The alternate name of Glucose is
|
A. Dextrose
B. Grape sugar
C. Blood sugar
D. All
|
| 8 |
Keeping in view the size of atoms, which order is correct?
|
A. N>C
B. P > Si
C. Ar > Cl
D. Li > Be
|
| 9 |
Which one of the following is not a component of environment
|
A. Biosphere
B. Stratosphere
C. Hydrosphere
D. Lithosphere
|
| 10 |
The values of ∆H for the process l(g)+e-1---------> I-1(g) is:
|
A. >0
B. <0
C. 0
D. None
|
| 11 |
Solid waster of the city is disposed off by dumping in a landfill. Which of the following gas is produced in the landfill
|
A. Oxygen
B. Chlorine
C. Hydrogen sulphide
D. Hydrogen chloride gas
|
| 12 |
Ethyl alcohol reacts with PCL and produces:
|
A. Haloalkane
B. Alkyl halide & H3PO3,
C. Alkyl halide & POCl3
D. Alkyl halides &H3PO4.
|
| 13 |
Contamination of water of tanning industries is due to:
|
A. Cr(III)
B. Cr(VI)
C. Mn(III)
D. Mn(VII)
|
| 14 |
Carboxylic acid is more acidic than phenol because of the greater stability of
|
A. Carboxylic acid
B. Phenoxide ion
C. proton
D. Carboxylate ion
|
| 15 |
Choose the difference between natural and synthetic fertilizers:
|
A. shapes
B. usage
C. crop application
D. raw material
|
| 16 |
Which of the following configurations corresponds to alkaline earth metals?
|
A. [Ar] 3d10, 4s2
B. [Ne] 3d2, 3p2
C. [Ar] 4s2
D. [Ar], 3d10, 4s1
|
| 17 |
Amino acid which synthesized many hormones is
|
A. Valine
B. Phenylalanine
C. Alanine
D. Histidine
|
| 18 |
Unit of the rate constant depends upon the
|
A. Molecularity of reaction
B. Order of reaction
C. Concentration terms
D. Number of reactants
|
| 19 |
Which one of the following is NOT able to denature the ethanol?
|
A. Methanol
B. Lactic Acid
C. Pyridine
D. Acetone
|
| 20 |
Activity of the enzyme is reduced by
|
A. temperature
B. concentration
C. pH
D. inhibitors
|
| 21 |
The alkaline earth metals are called so because they
|
A. form alkaline solution and are present in earth crust as minerals
B. form alkaline solution and are found in nature states
C. are present in earth crust
D. are present in earth crust as their minerals
|
| 22 |
Which of the following alcohol cannot be produced by treatment of aldehydes or ketones with NaBH4
|
A. I-propanol
B. 2-Methyl-2-propanol
C. 2-propanol
D. Ethanol
|
| 23 |
Denaturation of protein means the structure of protein is disrupted indicate which factor does not denature protein
|
A. oxidizing agent
B. heat protein
C. keeping pH 7.35
D. pH changes
|
| 24 |
The temperature in the incineration of industrial and hazardous waste process has a range of:
|
A. 950-1300C
B. 250-500C
C. 500-900C
D. 900-1000C
|
| 25 |
Ecosytem is a smaller unity of:
|
A. nydosphere
B. biosphere
C. lithosphere
D. atmosphere
|
| 26 |
Which not a method for solid waste management>
|
A. Landfill
B. Incinerating
C. Recycling
D. None of these
|
| 27 |
Which of the following is a simple protein
|
A. Albumins
B. Legumin
C. Callogen
D. All
|
| 28 |
Chemicals used to kill herbs are:
|
A. Herbicides
B. Insecticides
C. Pesticides
D. Fungicides
|
| 29 |
The normal amount of overhead ozone is
|
A. 350 DU
B. 450 DU
C. 400 DU
D. 300 DU
|
| 30 |
By the electrolysis of CuCl2 using inert electrodes of platinum which species is deposited at cathode
|
A. H2
B. O2
C. Cu
D. CI
|
| 31 |
Which reactant does hnof liberate water on reaction with alcohol
|
A. NH3
B. K2Cr2O7/15H2O
C. HCI
D. PCI3
|
| 32 |
Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg Toxic.
|
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
|
| 33 |
Scandium has atomic number 21, which one will be its electronic configuration.
|
A. 1s2, 2s2, 2p6, 3s2, 3p6, 3d1
B. 1s2, 2s2, 2p6, 3s2, 3p6, 4s2,3d1
C. 1s2, 2s2, 2p6, 3s2, 3p6, 4s2.4p1
D. 1s2, 2s2, 2p6, 3s2, 3p6, 4s1,4p2
|
| 34 |
When the concentration of reactants is taken as unity the rate of reaction is equal to
|
A. average rate
B. concentratian of reactant
C. instantaneous rate
D. specific rate constant
|
| 35 |
Which of the follwing dnes not give brick red precispitate wits Fehling's solution
|
A. Acetaldehyde
B. Formalin
C. prorionaldehyde
D. Acetone
|
| 36 |
The starting substance for the preparation of iodoform is any of the following, except
|
B. CH3CH2ОН
C. HCH2OH
D. CH3COCH3
|
| 37 |
SO2 and NO2 cause pollution due to increase in:
|
A. buffer action
B. basicity
C. acidity
D. neutrality
|
| 38 |
Which is the least reactive of all the alkali metals
|
A. Li
B. Na
C. K
D. Cs
|
| 39 |
Which one of the following organic acids is made from methanol
|
A. Propanoic acid
B. Butanoic acid
C. Formic acid
D. Acetic acid
|
| 40 |
Among the following the polycyclic aromatic compound is
|
A. Styrene
B. Naphthalene
C. Toluene
D. Acetophenone
|
| 41 |
Poly hydroxyl compounds of aldehyde and ketones are?
|
A. Carbohydrates
B. Proteins
C. Fats
D. Lipids
|
| 42 |
Cellulose is the polymer of
|
A. α-D-glucose
B. β-D-glucose
C. Fructose
D. None
|
| 43 |
Diamond, graphite and sand grant molecules are belonged to:
|
A. Inorganic
B. Organic
C. biopolymer
|
| 44 |
H2O and HF are the hydrides of the second period. Fluorine is more electronegative than oxygen. Anyhow, the boiling point of water is greater than that of HF. This is due to:
|
A. water is more polar than HF
B. water has a bent structure
C. HF has a zig zag structure after making hydrogen bonding
D. the number of hydrogen bonds produced by water are greater than that of HF
|
| 45 |
Which of the following is a macronutrient?
|
A. Boron
B. Iron
C. Copper
D. Carbon
|
| 46 |
Fumaric acid converted into malic acid in the presence of
|
A. Lyases
B. Glyceomutases
C. Fumarase
D. Hydrolases
|
| 47 |
How many zones through which the charge passes in a rotary kiln?
|
A. 4
B. 3
C. 2
D. 5
|
| 48 |
Cellulose is formed from
|
A. D-galactose units
B. 50% of D-glucose and 50% of L-glucose units
C. L-glucose units
D. D-glucose units
|
| 49 |
In a group, the atomic radii from top to bottom
|
A. increase
B. decrease
C. don't change
D. show variable trend
|
| 50 |
Which one of the following is used as a typical catalyst for catalytic cracking.
|
A. C Mixture of SiO2 and Ni
B. Mixture of Pt and Cu
C. Mixture of Fe and MgO
D. Mixture of SIO2 and Al2O3
|
| 51 |
Which one of the following is a disaccharide?
|
A. glucose
B. sucrose
C. fructose
D. starch
|
| 52 |
The specifie substance (metabolite) that fits on the enzyme surface and is converted to products is called
|
A. Co-factor
B. Isoenzyme
C. Prosthetic group
D. Substrate
|
| 53 |
Which compound will be produced by the oxidation of ethanol by acidified K2Cr2O7?
|
A. Ethanone
B. Ethene
C. Ethanoic acid
D. Ethanol
|
| 54 |
Which factor is helping to reduce the environment pollution
|
A. rapid growth population
B. urbanization
C. idustrialization
D. increase of plantation
|
| 55 |
Which of the elements has seven electrons in d-subshell?
|
A. Zn
B. Co
C. Cu
D. Fe
|
| 56 |
The highest oxidation state of manganese is
|
A. +7
B. -7
C. +6
D. +4
|
| 57 |
Optimum PH rang for amylases is
|
A. 6 - 6.4
B. 6.4 - 6.6
C. 6.4 - 6.9
D. 6.6 - 6.9
|
| 58 |
Which of the following transition metal forms colourless compounds in +4 oxidation state?
|
A. Ti
B. Cr
C. Cu
D. Zn
|
| 59 |
Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect
|
A. Nose
B. Stomach
C. Eyes
D. Ears
|
| 60 |
If the energy of the activated complex lies close to energy of reactants, it means that reaction is
|
A. Slow
B. Exothermic
C. Endothermic
D. Exothermic and fast
|