| 1 |
Which of the following undergoes easy dehydration?
|
A. 3-MethyIbutan-2-ol
B. Ethanol
C. 2.Methylpropan-2-ol
D. Methanol
|
| 2 |
In an electrochemical series, elements are arranged on the basis of
|
A. pH scale
B. pKa scale
C. pOH scale
D. Hydrogen scale
|
| 3 |
Atmosphere consists of gasses:
|
A. N2
B. O2
C. Ar
D. All
|
| 4 |
Tertiary alcohols have alpha bydrogens
|
A. 1
B. Zero
C. 2
D. 3
|
| 5 |
ln ethyl alcohol, the bond that undergoes heterolytic cleavage most readily is
|
A. C-C
B. C-O
C. C-H
D. O-H
|
| 6 |
SO2 produced by volcanoes is about
|
A. 75%
B. 67%
C. 69%
D. 70%
|
| 7 |
Sex harmones belong to a group of organic compounds called:
|
A. heterocyclics
B. steroids
C. amino acids
D. amines
|
| 8 |
Which one of the following was uses as one of the earliest antiseptic and disinfectant?
|
A. Phenol
B. Ether
C. Ethanol
D. Methanol
|
| 9 |
Sponification number of a fat which requires 178,000 mg of KOH for saponification is (mol wt = 1240)
|
A. 120
B. 143
C. 208
D. 210
|
| 10 |
Men residence time of methane in atmosphere in years is:
|
A. 1-7
B. 2-7
C. 3-7
D. 4-7
|
| 11 |
The nature of the attractive force in acetone and chloroform are
|
A. dipole-induced dipole forces
B. dipole-dipole forces
C. ion-dipole forces
D. instantaneous forces
|
| 12 |
The pH range of acid rain is?
|
A. 7-6.5
B. 6.5-6
C. 6-5.6
D. Less than 5
|
| 13 |
A combination of glucose and fructose is called
|
A. sucrose
B. table sugar
C. a & b
D. Lactose
|
| 14 |
If volume of an ideal gas at 0C° 536cm3, what is volume at 1°C
|
A. 373 cm3
B. 646 cm3
C. Becomes 0cm3
D. 746 cm3
|
| 15 |
which of the following d blocks element can showthe highest oxidation number is its ompound
|
A. Chromium
B. iron
C. Copper
D. Manganese
|
| 16 |
Which of the following reactions are usually slow?
|
A. Neutralization of acids and bases
B. Displacement Reactions
C. Organic substitution reaction
D. Free radical reactions
|
| 17 |
In all oxidation reactions, atoms of an element in a chemical species lose electrons and increases their
|
A. Oxidation states
B. Reduction states
C. Electrode
D. Negative charges
|
| 18 |
Potency and turn over are terms related to:
|
A. enzymes
B. proteins
C. fats
D. oils
|
| 19 |
The temp. and pressure used for PVC polymerization is
|
A. 10°C and 10 atm
B. 20°C and 20 atm
C. 52°C and 9 atm
D. 100°C and 10 atm
|
| 20 |
The bond angle between any two sp hybrid orbitals is A.109.28°
|
A. 107.09°
B. 120°
C. 90°
D. 80°
|
| 21 |
How many times a newspaper can be recycled
|
A. 02
B. 05
C. 08
D. 10
|
| 22 |
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
|
| 23 |
Raffinose is a trisacharirde composed of monosaccharide is
|
A. Glucose
B. Glactose
C. Fructose
D. All
|
| 24 |
Violet colour of [Ti(H2O)]4 ion is due to.
|
A. Central metal ion
B. Complex ion
C. Water molecule
D. Outer anion
|
| 25 |
Reaction mechanism of alkanes with halogens is known as
|
A. Propagation
B. Additon
C. Elimination
D. Free radical substitution
|
| 26 |
In which of the following processes are small organic molecules made into macromolecules
|
A. The cracking of petroleum fractions
B. The fractional distillation of crude oil
C. The polymerization of ethene
D. The hydrolysis of protein
|
| 27 |
The most abundant protein in the human body is
|
A. Collagen
B. Keratin
C. Myosin
D. Albumin
|
| 28 |
Born-Haber cycle is an application of
|
A. Hess's law
B. 1" law of thermodynamics
C. Avogadro's law
D. 1law of thermochemistry
|
| 29 |
One gram of Carbohydrate yield energy:
|
A. 4Kcal
B. 9Kcal
C. 10Kcal
D. 100Kcal
|
| 30 |
Which of these polymers is an addition polymer
|
A. Nylon 6, 6
B. Polystyrene
C. Terylene
D. Epoxy resin
|
| 31 |
Which of the following is synthetic thermoplastic polymer
|
A. PVC
B. Bakelite
C. Synthetic varnishes
D. Both b & c
|
| 32 |
Cholesterol is an important precursor in the biosynthesis of
|
A. Adrenal hormones
B. Sex hormones
C. Vitamin-D
D. All of these
|
| 33 |
In an elimination reaction a more substituted alkene is formed due to the stability associated with
|
A. Free radical
B. transition state
C. Activated complex
D. Carbocation
|
| 34 |
Active sulphonating agent during sulphonation of benzene is
|
A. SO2
B. SO3
C. SO3H
D. SO3+
|
| 35 |
Hydrolysis of protein by 6M HCl gives peptides and then alpha-amino acids. How many alpha-amino acids molecules are obtained on the hydrolysis of a tetrapeptide
|
A. 2
B. 3
C. 4
D. 5
|
| 36 |
What is the formula of silica?
|
A. Si2O3
B. SiO2
C. Si3O4
D. SiO-
|
| 37 |
Suspended matter is settled in purification of water by:
|
A. aeration
B. coagulation
C. chlorination
D. treatment
|
| 38 |
Ester with raspberry flavor
|
A. Amyl acetate
B. Isobutyl formate
C. Amyl butyrate
D. Octyl acetate
|
| 39 |
Which of the following is obtained by the hydrolysis of starch in the presence of diastase enzyme
|
A. Lactose
B. Maltose
C. Sucrose
D. All of them
|
| 40 |
The enzyme which is found in saliva, accelerates the conversion of starch into sugar is
|
A. Pepsin
B. Thrombin
C. Ptyalin
D. Fumarase
|
| 41 |
Enzymes consist of
|
A. proteins only
B. proteins and non-protein parts
C. fats only
D. futs and non-fatty components
|
| 42 |
BOD is the oxygen demand with in day(s):
|
A. Four
B. Two
C. Three
D. Five
|
| 43 |
Isotopes symbol of ion of sulphur-33 is 33 S-2 . How many no of protons 16 and neutrons are present if the number of electron are 18.
|
A. P=18, n = 15
B. P = 16 , n = 17
C. P = 16, n = 16
D. P= 17, n = 16
|
| 44 |
For reaction of methane and chlorine light is not available then
|
A. Reaction will take place rapidly
B. No Reaction take place
C. Reaction occurs at double the rate
D. May all cases occur
|
| 45 |
Which of the following bonds is not present in NH4CL
|
A. lonic bond
B. Covalent bond
C. Co-ordinate covalent bond
D. De-localized covalent bond
|
| 46 |
Which compound is obtained by the elimination of bromopropane?
|
A. Propene
B. Ethene
C. Propane
D. Butane
|
| 47 |
Acetylide can give back ethyne upon treatment with
|
A. water
B. strong base
C. dil. Acid
D. weak base
|
| 48 |
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
|
| 49 |
The geometry of diamonds is
|
A. tetragonal
B. cubic
C. rhombohedral
D. none of these
|
| 50 |
Polycyclic aromatic hydrocarbons are taught to be
|
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
|
| 51 |
Keratin is
|
A. Protein of tendons
B. Rich in sulfur
C. Poor in cysteine
D. Conjugated protein
|
| 52 |
C6H12O6is molecular formula of:
|
A. Glucose
B. Dextrose
C. Fructose
D. All of these
|
| 53 |
Which one of the following organic acids is made fork methanol?
|
A. propanoic acid
B. butanoic acid
C. formic acid
D. acetic acid
|
| 54 |
A polymer of PVC having D.P 500 has molar mass:
|
A. 6300
B. 63000
C. 3150
D. 31500
|
| 55 |
Which of the following is basic amino acid
|
A. Lysine
B. Histidne
C. Proline
D. Both a and b
|
| 56 |
Which of the following are not known to form compounds in more than one oxidation state?
|
A. Transition metals
B. Halogens
C. Alkali metals
D. Noble gases
|
| 57 |
Which of the following alcohols is least reactive with respect to 0-H bond
|
A. CH3OH
B. CH-CH2-OH
C. (CH3)2-CH-OH
D. (CH3)3OH
|
| 58 |
Ozone is an allotropic form of:
|
A. Carbon
B. Phosphorus
C. Oxygen
D. Sulfur
|
| 59 |
Which of the following is soluble in water?
|
A. СН3ОН
B. CCL4
C. CHCI3
D. CS2
|
| 60 |
Which of the following are thermoplastic materials?
|
A. PVC (poly vinyl chloride)
B. polystryences
C. polyethylene
D. all above
|