| 1 |
Terylen fibre is made by reaction of terephthalic acid with
|
A. ethylene
B. ethylene glycol
C. glycol
D. terylene
|
| 2 |
Which of the following polymer has application in paper industry
|
A. Starch
B. Glycogen
C. Protein
D. All
|
| 3 |
Gas is enclosed in a container of 20 cm3 with the moving piston. According to kinetic theory of gases, what will be the effect on freely moving molecules of the gas if temperature is increased from 20 oC in 100 oC?
|
A. Volume will be increased
B. Decrease rate of a reaction
C. Decrease yield of a reaction
D. Increase yield of product
|
| 4 |
Vegetables oils are
|
A. Unsaturated fatty acids
B. Glycerides of unsaturated fatty acids
C. Glycerides of saturated fatty acids
D. Essential oils obtained from plants
|
| 5 |
How many zones through which the charge passes in a rotary kiln?
|
A. 4
B. 3
C. 2
D. 5
|
| 6 |
A molecule oilgosacharide on hydrolysis produces _____ molecules of monosacharide:
|
A. 1
B. 2
C. 4
D. 6
|
| 7 |
For a chemical reaction in which one of the reactant also act as solvent, the order will be
|
A. First order
B. Third order
C. Second order
D. pseudo-first order
|
| 8 |
Which of these has at least one d electron
|
A. Sc+3
B. Mn+7
C. Ti+4
D. Cr+3
|
| 9 |
Rancidification of fast and oils is due to:
|
A. hydrolysis reaction
B. oxidation reaction
C. both a and b
D. hydrogenation reaction
|
| 10 |
Which option shows all the molecule with bond angle 109.5o.
|
A. CH4,CCl4,NH3
B. CH4,NH4 PH3
C. SiCl4 H2O BeCl2
D. SiCl4 Nh4CH4
|
| 11 |
Which one of the following is an example of co-polymer?
|
A. Polyamide
B. Polystyrene
C. Polyvinyl acetate
D. Polyvinyl chloride
|
| 12 |
Elimination unimolecular reactions involve
|
A. Second order kinetics
B. First order kinetics
C. Third order kinetics
D. Zero order kinetics
|
| 13 |
The type of structural isomerism which arises due to the difference in nature of carbon chains or carbon skeleton is.
|
A. Chain Isomerism
B. Position Isomerism
C. Sis-Trans Isomerism
D. Optical Isomerism
|
| 14 |
During esterifcation, the alcobol molecule acts as:
|
A. Oxidizing agent
B. Electrophile
C. Reducing agent
D. Nucleophile
|
| 15 |
Which one among the following is not a natural polymer?
|
A. protein
B. cellulose
C. nylon
D. nucleic acid
|
| 16 |
Which of the following human activities are contaminating surface and ground waters?
|
A. pesticides
B. septic ranks
C. petroleum and natural gas production
D. all of these
|
| 17 |
An excellent source of energy without causing pollution is
|
A. Fossil fuel
B. Sun
C. Petroleum
D. Nuclear reactor
|
| 18 |
Energy of atom in compound is
|
A. Higher than individual atom
B. Lower than individual atom
C. equal to individual atom
D. Impossible to predict
|
| 19 |
Which compound is not formed as a result of reaction between acetic acid & HI & red phosphorous
|
A. Ethanol
B. Water
C. lodine
D. Ethane
|
| 20 |
The pH range of acid rain is:
|
A. 6.5 -6
B. 8-7.5
C. Less than 5
D. 7- 6.5
|
| 21 |
Variable Oxidation state of is related to transition elements
|
A. empty d-subshells
B. Completely filled
C. Partially filled d-subshell
D. d-d transition
|
| 22 |
Monosacharide belongs to the groups:
|
A. fats
B. carbohydrates
C. lipids
D. proteins
|
| 23 |
Sex harmones belong to a group of organic compounds called:
|
A. heterocyclics
B. steroids
C. amino acids
D. amines
|
| 24 |
Which one of the following enzymes brings about the hydrolysis of fats?
|
A. urease
B. maltase
C. zymase
D. lypase
|
| 25 |
Industrial effluents have toxic synthetic organic compounds as well as heavy metals like
|
A. Pb
B. Cr
C. Hg
D. All of these
|
| 26 |
Photochemical smog consists of higher concentration of:
|
A. Oxidants
B. Ozone
C. a & b
D. NO3
|
| 27 |
The boiling points of the halogens
|
A. increases down the group
B. decreases down the group
C. remains constant
D. can not be predicted
|
| 28 |
Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
|
A. SO2
B. NO2
C. CO
D. a and b only
|
| 29 |
Hydrogen bonding is extensively present in proteins which form the spiral. The hydrogen bond being produced is between
|
A. nitrogen and hydrogen atom
B. oxygen and hydrogen atom
C. carbon and hydrogen atom
D. oxygen and carbon atom
|
| 30 |
Chloroform is carcinogenic:
|
A. Heart
B. Lungs
C. Liver
D. Kidney
|
| 31 |
Formic acid is given name from Latin word a "formic" which means:
|
A. Red out
B. Vinegar
C. Butter
D. Milk
|
| 32 |
Oxidation of secondary alcohol produces
|
A. Aldehyde
B. Ketone
C. Alkyl halide
D. Ester
|
| 33 |
Oils and fats belong to the class of
|
A. Alcohols
B. Hydrocarbons
C. Acids
D. Esters
|
| 34 |
Halogen are being used as fire extinguisher, mild antiseptic, CFCs and many other organic chemicals. Which of the following halogen is used to kill the bacteria in drinking water.
|
A. Bromine
B. Fluorine
C. Chlorine
D. Iodine
|
| 35 |
Which is the following is true about galvanic cell:
|
A. Reduction occurs at cathode
B. Reduction occurs at anode
C. Anode is negatively charged
D. Chathode is positively charged
|
| 36 |
Rigid rocky crust earth upto a depth of 100 km is called:
|
A. Atmosphere
B. Hydrosphere
C. Lithosphere
D. All of these
|
| 37 |
The species which are produced by heterolytic bond breaking and can act as electron pair donor
|
A. Free radicals
B. Cations
C. Nucleophiles
D. electrophile
|
| 38 |
Which one is a non-polar compound?
|
A. SnCl2
B. PH3
C. Gecl4
D. H2O
|
| 39 |
Macromolecules are classified:
|
A. inorganic
B. organic
C. biopolymer
D. synthetic
|
| 40 |
Nylon -6,6 also called
|
A. Polyvinyl alcohol
B. Polystyren
C. Polyamide
D. Polyester
|
| 41 |
Keratin is
|
A. Protein of tendons
B. Rich in sulfur
C. Poor in cysteine
D. Conjugated protein
|
| 42 |
Ozone layer is high:
|
A. 20-23 km
B. 22-25 km
C. 23-26 km
D. 25-28 km
|
| 43 |
One of the environment problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks
|
A. blow air
B. add Na2CO3
C. use a specially made sorbent having fluorine trapped in it
D. Use a sorbent having Al2O3trapped in it
|
| 44 |
The reaction between Cu and conc. H2SO4 produces
|
A. Cu+2
B. SO2
C. SO3
D. H2
|
| 45 |
Which is the least reactive of all the alkali metals
|
A. Li
B. Na
C. K
D. Cs
|
| 46 |
The pH of the rain water in areas where acid rain is the cause of pollution may be
|
A. 6.5
B. 5.6
C. 4.5
D. 2.2
|
| 47 |
What will be the pH of 1.0 mol dm -3 of H2X, which is only 50% dissociated
|
A. 1
B. 0
C. 2
D. Less than 0
|
| 48 |
The composition mixture of clay and lime stone in a raw material is:
|
A. 75% limestone & 25% clay
B. 15% limestone & 55% clay
C. 25 limestone & 75% clay
D. 55% limestone & 15% clay
|
| 49 |
In the woody parts of trees, the % age of cellulose is.
|
A. 50%
B. 10%
C. 30%
D. 100%
|
| 50 |
In the body, carbohydrates are broken down into
|
A. Glucose
B. Fatty acids
C. Amino acids
D. Nucleic acid
|
| 51 |
Which of the following is basic amino acid
|
A. Lysine
B. Histidne
C. Proline
D. Both a and b
|
| 52 |
Which of the following salts would give the same products irrespective of whether its molten form or concentrated aqueous solution is electrolysed?
|
A. Magnesium bromide
B. Magnesium sulphate
C. Copper sulphate
D. Copper chloride
|
| 53 |
The unit of peptides is
|
A. Moiety
B. Residue
C. Polypeptide
D. Both A and B
|
| 54 |
Surface and ground water sources are contaminated by various human activities. Which of the following is not a human activity that causes contamination in fresh water
|
A. Rain
B. Live stock waste
C. Oil leaks and spills
D. Disposal of industrial effluents
|
| 55 |
The substances added in paints for improving the mechanical properties is called:
|
A. pigmein
B. filter
C. stabilizer
D. binder
|
| 56 |
Oxygen and sulphur are present in VI-A group of the periodic table The hydride of oxygen i.e., H2O is liquid at room temperature but the hydride of sulphur (H2S) is a gas. This is due to
|
A. greater bond angle of water than Hs
B. greater bond lengths in HS than H2O
C. hydrogen bonding in water
D. acidic character of HS
|
| 57 |
Furan is a compound
|
A. Acyclic
B. Alicyclic
C. Heterocyclic
D. non-aromatic
|
| 58 |
Relation of water with quick lime result in the rise in the temperature of the system using the concept of energy change, indicate the nature of the reaction?
|
A. Endothermic reaction
B. Third order reaction
C. Exothermic reaction
D. Non spontaneous reaction
|
| 59 |
In order to determine ∆H (latt) of ionic compound which is correct relationship
|
A. ∆H latt. = ∆Hf - ∆Hx
B. ∆H latt. = ∆Ha + ∆Hv
C. ∆H latt. = ∆Hf + ∆Hx
D. ∆H latt. = ∆Hf - ∆H sol.
|
| 60 |
Determine the number of molecule O2 in 10.6 g of NaCO3
|
A. 0.4 moles
B. 0.3 moles
C. 0.2 moles
D. None of these
|