| 1 |
Organic pollutants in water are measured by
|
A. DO
B. COD
C. Water logging
D. PH
|
| 2 |
The volume of gas depends upon the------- moleules
|
A. Size of
B. Space between
C. Molecular weight
D. both a and b
|
| 3 |
Methyl cyanide, on boiling with mineral acids yield
|
A. Acetic acid
B. Formic acid
C. Propanoie acid
D. Butanoic acid
|
| 4 |
Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases?
|
A. NO2
B. SO2
C. Hg
D. Pb
|
| 5 |
Lead pollution is mainly due to
|
A. Metallic pollution
B. Space pollution
C. Acid rain
D. Cd pollution
|
| 6 |
Chemicals used to kill insects are:
|
A. Herbicides
B. Insecticides
C. Pesticides
D. Fungicides
|
| 7 |
For which mechanisms, the first step involved is the same
|
A. E1 and E2
B. E2 and SN2
C. E2 and E1
D. E1 and SN1
|
| 8 |
Geometry of NH3 is
|
A. Tetrahedral
B. Square planer
C. Pyramidal
D. Linear
|
| 9 |
The study of which one of the followings guides to the mechanism of the reaction
|
A. Order of reaction
B. Rate of reaction
C. Half-life period of reaction
D. Rate determining step
|
| 10 |
Which of the following is not glyceride
|
A. Soap
B. Phospholipids
C. Oil
D. Fat
|
| 11 |
Sugar are polyhydroxy compounds of
|
A. Carboxylic acid
B. Ketones
C. Aldehyde
D. Both B and C
|
| 12 |
Select the correct acidic strength order of chloro substituted acid.
|
A. CH3COOH >Cl2CH2COOH>Cl2 CHCOOH>CCOOH
B. CH3COOH>ClCH2COOH>Cl3COOH>Cl3COOH
C. ClCCOOH>Cl2CHCOOH>ClCH2COOH>CH2COOH
D. CH3COOH>ClCH2COOH>Cl2CHCOOH>Cl3CCOOH
|
| 13 |
Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases
|
A. NO2
B. SO2
C. Hg
D. Pb
|
| 14 |
Which is not considered as pollutant
|
A. O3
B. CO2
C. NO2
D. SO2
|
| 15 |
Terylen fibre is made by reaction of terephthalic acid with
|
A. ethylene
B. ethylene glycol
C. glycol
D. terylene
|
| 16 |
What are the conditions under which the relation between volume (V) and number of moles (n) of gas is plotted? (Pressure; T-temperature)
|
A. constant P and T
B. constant P and V
C. constant T and V
D. constant n and v
|
| 17 |
Amount of cellulose produced by plants every year is _____ approximately
|
A. 100 billion tons
B. 90billion tons
C. 80 billion tons
D. 70 billion tons
|
| 18 |
The mechanism of polymerization involves free radical addition polymerization or condensation polymerization. Choose the correct statement
|
A. Polyester is an addition polymer
B. Polythene is an addition polymer
C. Polyvinyl chloride (PVC) is a condensation polymer
D. Polystyrene
|
| 19 |
Which of the following reactants will be required to form ethene from ethyl chloride
|
A. Alcoholic KOH
B. Alkaline KMnO4
C. Aqucous KOH
D. Aqucous NaOH
|
| 20 |
A molecule which contains two lone pairs and two bond pairs of electrons in valence shell of central atom, geometrical shape of molecules will be
|
A. Tetrahedral
B. Trigonal pyramidal
C. Angular
D. Linear
|
| 21 |
Condensation occurs between amino acids with the elimination of
|
A. H2O
B. H2
C. O2
D. NH3
|
| 22 |
Ozone is produced in regions:
|
A. tropical
B. Polor
C. antaric
D. equator
|
| 23 |
RNA regulate the synthesis of
|
A. Vitamis
B. Carbohydrate
C. Proteins
D. Lipids
|
| 24 |
Which element differs from rest of elements of its group?
|
A. Ba
B. Mg
C. Ca
D. Be
|
| 25 |
Which behaves as insulator for animals body?
|
A. Carbohydrates
B. Proteins
C. Fats
D. Skin
|
| 26 |
What is the formula of dolomite?
|
A. CaMg3 (SiO3)4
B. MgCO3
C. MgCO3.CaCO3,
D. MgSO4
|
| 27 |
General formula of aliphatic carboxylic acids:
|
A. R-OH
B. R-COH
C. R-CO-R
D. RCOOH
|
| 28 |
Coenzymes are the species which increase the activity of enzymes. They are chemically
|
A. Metal ions
B. non-metals
C. Organic acids
D. Organic bases
|
| 29 |
Insoluble ferric oxide is produced in the pH range:
|
A. 1 to 8
B. 6 to 9
C. 3 to 13
D. 8 to 13
|
| 30 |
The structure of protein helps protein to
|
A. be in proper shape
B. attach substrate
C. perform is function
D. All of these
|
| 31 |
The polymers which can not be re-softened again and again are called
|
A. Thermoplastic
B. Thermosetting
C. Both a and b
D. None
|
| 32 |
How many esters are possible for C2H8O2
|
A. 3
B. 2
C. 4
D. 5
|
| 33 |
The boiling points of the halogens
|
A. increases down the group
B. decreases down the group
C. remains constant
D. can not be predicted
|
| 34 |
Which is used as a coagulant:
|
A. Ferric salts
B. Potash alum
C. a and b both
D. Chlorine
|
| 35 |
Which of the statement is applicable for both ideal and real gases molecules?
|
A. Have no forces of attraction
B. Collisions between the molecules is elastic
C. Molecules are in random movement
D. The actual volume of gas is negligible as compared to the volume of gas
|
| 36 |
The Sl mechanism for the hydrolysis of an alkyl halide to an alcohol involves the formation of
|
A. Carbocation
B. Carbanion
C. Pentavalent carbon in the transition state
D. Free radical
|
| 37 |
Structure of CrO4(-2) is'
|
A. triclinic
B. cubic
C. octahedral
D. tetrahedral
|
| 38 |
Calendar stock is process in paper making in which
|
A. Moisture is removed
B. Pulp is spreaded over fabric or screen
C. Paper thickness is removed
D. Paper is wounded in the form of reel
|
| 39 |
In the presence of hot alkaline potassium permanganate solution 2-butene will give
|
A. Formic acid +acetic acid
B. Two moles ethanoic acid
C. Two moles of methanoic acid
D. Ethylene glycol
|
| 40 |
In beta elimination reaction
|
A. carbon number changes
B. unsaturated compound is formed
C. hybridization. ofC remains same
D. pi bonds are decreased
|
| 41 |
The total number of 3d-series transition elements is
|
A. 10
B. 40
C. 14
D. 58
|
| 42 |
DDT is a:
|
A. Fungicide
B. Insecticide
C. Herbicide
D. All
|
| 43 |
Chloroform (CHCl3) is?
|
A. Primary alkyl halide
B. Secondary alkyl halide
C. Tertiary alkyl halide
D. a liquid
|
| 44 |
Which one among the following is not a good leaving group
|
A. HSO4-
B. CI-
C. OH-
D. Br-
|
| 45 |
When 1-butene reacts with bromine, the product formed will be
|
A. 1, 3-dihydroxy butane
B. But-1, 2-diol
C. 1, 3-dihydroxy butan-diol
D. 1,2-dibromo butane
|
| 46 |
Which is the optimum temperature for the activity of enzyme
|
A. 20 - 35°C
B. 10 - 15°C
C. 55 - 70°C
D. 35 - 55°C
|
| 47 |
According to kinetic theory of gases kinetic energy depends on
|
A. Temperature
B. Collision
C. Pressure
D. Atomic number
|
| 48 |
Which compounds is alicyclic in nature?
|
A. Cyclobutane
B. Iso-bstand
C. n-Butane
D. Toluend
|
| 49 |
The temperature in the incineration of industrial and hazardons waster process had a range
|
A. 950 to 1300°C
B. 500 to 900°C
C. 250 to 500°C
D. 900 to 1000°C
|
| 50 |
The reaction of bromine with benzene in the presence of FeBr3 follows the mechanism of
|
A. Electrophilic addition
B. Nucleophilic substution
C. Electrophilic substitution
D. Nucleophilic addition
|
| 51 |
Ozone is usually produced in the
|
A. South polar region
B. North pole region
C. Tropical region
D. Thermosphere zone
|
| 52 |
Chloroethene, CH2 = CHC/ is the monomer of PVC. What are the C-C-C bond angles along the polymeric chain in PVC?
|
A. They are all 109.5°
B. half are 109.5° and half are 120°
C. They are all 120°
D. They are all 180°
|
| 53 |
Example of basic essential amino acids
|
A. Arginine
B. Histidine
C. Lysine
D. All of the above
|
| 54 |
Potable water is considered to be
|
A. Safe for human consumption
B. The ground water
C. The surface water
D. Now safe for human consumption
|
| 55 |
Which is most acidic?
|
A. H2O
B. C2H5OH
C. C4H9OH
D. CH3-CH2-CH2OH
|
| 56 |
In nucleophilie substitution bimolecular reaction the order of reaction with respect to substrate
|
A. 2 order
B. 3 order
C. 1st order
D. Zero order
|
| 57 |
Third structure of protein structure refers to
|
A. Number and sequence of amino acids
B. Three dimensional structure of protein
C. Proteins formed of more than one monomer
D. Bending of protein molecule
|
| 58 |
Carboxylic acids having carboxyl group one is called:
|
A. Mono carboxylic acid
B. Di-carboxylic acid
C. Teri-carboxylic acid
D. Tetra carboxylic acid
|
| 59 |
pH of an aqueous solution is 3.0 at 25°C. The hydrogen ion concentration in the solution would be
|
A. 0.001
B. 0.01
C. 0.0001
D. 10(-5)
|
| 60 |
Which one of the following enzymes brings about the hydrolysis of fats?
|
A. urease
B. maltase
C. zymase
D. lypase
|