| 1 |
Nylon, 6,6 is a condensation polymer of
|
A. adipic acid and glycol
B. phthalic acid and glycol
C. adipic acid and hexaethylene diamine
D. phthalic acid and hexaethylene diamine
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| 2 |
Water is considered pollutant when value of Do is
|
A. 6 PPM
B. 8 PPM
C. 03 PPM
D. 10 PPM
|
| 3 |
On adding NH3 to water
|
A. lonic product will increase
B. [H3O+] will inerease
C. lonic product will decrease
D. [H3O+] will decrease
|
| 4 |
Eleven elements made part of earth mass:
|
A. 97.5%
B. 98.5%
C. 99.5%
D. 100%
|
| 5 |
Materials suspended in water or present as colloidal form in raw water are removed by:
|
A. aeration
B. coagulation
C. chlorination
D. treatment
|
| 6 |
Acording to the kinetic theory of gases
|
A. The pressure exerted by a gas is proportional to mean square velocity of the molecules
B. The pressure exerted by the gas is proportional to the root mean square velocity of the molecules
C. The root mean square velocity is inversely proportional to the temperature
D. The mean translational KE of the molecule is directly proportional to the absolute temperature
|
| 7 |
Ozone in most of the tropical regions acts as a pollutant and cause
|
A. damages to eyes
B. aggravates asthma
C. chest discomfort
D. all of these
|
| 8 |
Which products are formed when triglyceride is hydrolysed
|
A. Glycerol
B. Fatty acid
C. Glycerin
D. Both A and B
|
| 9 |
CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy?
|
A. 50000
B. 20000
C. 100000
D. 10000
|
| 10 |
Which functional group is present in glycerol tristearate
|
A. Carboxylic acid
B. Alcohol
C. Aldehyde
D. Ester
|
| 11 |
How many zones through which the charge passes in a rotary kiln?
|
A. 4
B. 3
C. 2
D. 5
|
| 12 |
Exhaust fumes of cars contain which poisonous gas
|
A. CH4
B. C2H6
C. CO
D. All of these
|
| 13 |
DDT is a:
|
A. Fungicide
B. Insecticide
C. Herbicide
D. All
|
| 14 |
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
|
| 15 |
Which one of the following element is not present in all proteins?
|
A. carbon
B. hydrogen
C. nitrogen
D. sulphur
|
| 16 |
Which one of the following reaction of carboxylic acid is reversible?
|
A. Esterification
B. Salt formation
C. Reaction with PCI5
D. Reaction with SOCI2
|
| 17 |
The scope of environmental chemistry is to study:
|
A. Source of chemicals
B. Transportation of chemicals
C. Transportation of toxic chemical
D. All of these
|
| 18 |
Which of the following is not heterocyclic compound?
|
A. Naphthalene
B. Furan
C. Pyridine
D. Pyrrole
|
| 19 |
In which of the following techniques rate of reaction is directly related with number ofions
|
A. Spectrometry
B. Dilatometric method
C. Conductometric method
D. Refractometric method
|
| 20 |
Unit of ozone is?
|
A. Debye
B. Dobson
C. Esu
D. Coulumb
|
| 21 |
Glycogen on hydrolysis give
|
A. Glucose
B. Lactose
C. Fructose
D. None
|
| 22 |
Which one of the following metals can replace the Copper from aqueous solution of its salt more easily?
|
A. Cd
B. Fe
C. Zn
D. Na
|
| 23 |
The fibre which is made from vinylidine chloride polymer is called
|
A. rayon fibre
B. azlon fibre
C. acetate fibre
D. all of the above
|
| 24 |
The gasses in the atmosphere are essential for sustaining life on earth; Thus oxygen is required for breathing, What for is carbon dioxide required?
|
A. to help plant to under go photosynthesis
B. to destroy nitrogen oxide form the atmosphere
C. to help to clean to atmosphere
D. to help in fixing of bacteria
|
| 25 |
Plastics are amorphous solids and
|
A. have sharp melting points
B. undergo clean cleavage when cut with knife
C. do not undergo clean cleavage
D. possess orderly arrangement over long distances
|
| 26 |
Violet colour of [Ti(H2O)]4 ion is due to.
|
A. Central metal ion
B. Complex ion
C. Water molecule
D. Outer anion
|
| 27 |
which of the following is a typical transition metal?
|
A. Sc
B. Y
C. Ra
D. Co
|
| 28 |
Polymer formed by the combining of three different monomers is called:
|
A. Homopolymer
B. Copolymer
C. Ter polymer
D. Thermoplastic polymers
|
| 29 |
The structure of a polymer depends upon how the monomer-repeating unit joins to makes a polymer, What is not the type of structure of a polymer?
|
A. synthetic polymer
B. linear polymer
C. branched
D. cross linked or inter connected polymer
|
| 30 |
In period 1 and period 3 maximum melting point shown by elements.
|
A. Nitrogen and phosphorous
B. Carbon and silicon
C. Lithium and sodium
D. Neon and argan
|
| 31 |
∆H=∆E is true for which of the following reaction
|
A. K+H2O----->KOH+H2
B. N2+3H2------>2NH3
C. AlCl3+3NaOH--->Al(OH)3+3 NaCl
D. 4Na + O2----->2Na2O
|
| 32 |
What is the morality of a solution containing 15g of urea is 500cm3 of solution?
|
A. 1M
B. 0.5M
C. 2M
D. 1.5M
|
| 33 |
The electrochemical series is based on
|
A. pH scale
B. Redox scale
C. Hdrogen scale
D. Arrhenius scale
|
| 34 |
Which of the following is the correct equation to calculate relative molecular mass of a gas
|
A. M=mPRTV
B. M=mPR/VT
C. M=PV/mRT
D. M=mRT/PV
|
| 35 |
The reaction of formaldehyde with HCN is
|
A. Nucleophilic substitution
B. Electrophilic substitution
C. Nucleophilic addition
D. Free radical addition
|
| 36 |
What is the effect of polluted air on environment:
|
A. ozone
B. acid rain
C. global warming
D. smog
|
| 37 |
Which is not mineral of AI?
|
A. Diaspore
B. Corrundam
C. Bauxite
D. Galena
|
| 38 |
At higher temperature isotherm of Boyle's law moves away from both axis, is due to increase in:
|
A. pressure
B. No. of moles
C. Volume
D. All
|
| 39 |
Spectrometry method is applicable if a reactant or a product absorbs radiation
|
A. Ultraviolet
B. Visible
C. Infrared
D. Any of these
|
| 40 |
Ethane nitrile can be converted into ethanoic acid through......intermediate
|
A. Ethyl alcohol
B. AcetyI chloride
C. Acetamide
D. Methyl cyanide
|
| 41 |
Liquid ammonia has become an important fertilizer for direct application to soil. It contains ____________ nitrogen.
|
A. 46%
B. 82%
C. 14%
D. 17%
|
| 42 |
Correct order for the reactivity ofalkyl halide in S, reactions
|
A. R-I>R-F>R-CI
B. R-F>R-CI>R-I
C. R-I>R-CI>R-F
D. R-CI>R-I>R-F
|
| 43 |
The simplest separating unit of a polymer is called:
|
A. Monomer
B. Dimer
C. Trimer
D. Macromer
|
| 44 |
Which of the following acts as a electrocphile in the electrphilic substitution of benzene.with bromine.?
|
A. Fe-3
B. Br-
C. FeCl4-
D. Fe+2
|
| 45 |
Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases?
|
A. NO2
B. SO2
C. Hg
D. Pb
|
| 46 |
Amount of fresh water used by agriculture is
|
A. 2%
B. 23%
C. 69%
D. 97%
|
| 47 |
The mono atomic gases are
|
A. Halogens
B. Noble gases
C. 6h group elements
D. Nitrogen and oxygen
|
| 48 |
The energy produced by a carbohydrate is
|
A. 3 kcal/gm
B. 2 kcal / gm
C. 6kcal / gm
D. 4 kcal/ gm
|
| 49 |
Which of the following molecule has largest number of shared pair of electrons?
|
A. CO2
B. N2
C. NH3
D. C2H4
|
| 50 |
Which of the following statements is incorrect about vitamins
|
A. often function as coenzymes
B. molecules contain at least one ring structure
C. are often synthesized by the body
D. are polyfunctional compounds
|
| 51 |
Ozone is effectively removed by
|
A. TNT
B. CFCs
C. PVC
D. CNG
|
| 52 |
Common names of carboxylic acids are given by then:
|
A. Source
B. Person discovered
C. Place
D. Habit
|
| 53 |
The smog having high contents of SO2is
|
A. Neutral smog
B. Reducing smog
C. Oxidizing smog
D. Artificial smog
|
| 54 |
The reaction between fat and NaOH is called?
|
A. Esterification
B. Hydrogenolysis
C. Fermentation
D. Sponification
|
| 55 |
The boiling points of the halogens
|
A. increases down the group
B. decreases down the group
C. remains constant
D. can not be predicted
|
| 56 |
What forces operate between ethyl group of ethyl alcohol and oxygen of water
|
A. H-bonding
B. attractive forces
C. repulsive forces
D. dipole forces
|
| 57 |
Which compound is obtained by the elimination of bromopropane?
|
A. Propene
B. Ethene
C. Propane
D. Butane
|
| 58 |
The potential difference set up at 25 C and 1 atm when clectrode is dipped m Tis one molar ionic sohution is called
|
A. Single electrode potential
B. electrode potential
C. Standard electrode potential
D. Standard hydrogen electrode
|
| 59 |
Which one of the following is not an alicyclic compound?
|
A. Cyclohexene
B. Cyclohexane
C. Benzene
D. Cyclopentane
|
| 60 |
An alcohol is converted to an aldehyde with same number of carbon atoms as that of alcohol in the presence of K2Cr2O7/H2S04 the alcohol is
|
A. CH3C(CH3)2OH
B. (CH3)3COH
D. (CH3)2CHOH
|