| 1 |
Which of the following factors is not used to determine the quality of water
|
A. COD
B. BOD
C. DO
D. Available chlorine
|
| 2 |
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
|
| 3 |
Which of these the most widely used nitrogen fertilizer in Pakistan?
|
A. urea
B. ammonium nitrate
C. ammonium sulphate
D. ammonium chloride
|
| 4 |
Components of environment is (in km) around the earth:
|
A. 10 km
B. 100 km
C. 1000 km
D. 1500 km
|
| 5 |
Which of the following ketone will not give iodoform test
|
A. Methyl isopropyl ketone
B. Dimethyl ketone
C. Ethyl isopropyl ketone
D. 2-hexanone
|
| 6 |
The value of ∆V being very small. The term P∆V can be neglected for process involving
|
A. Liquid and gas
B. Solids and gases
C. Liquid and solid
D. None of these
|
| 7 |
The main pollution leather tanneries in the waste water is due to the salt of:
|
A. chromium
B. copper
C. calcium
D. lead
|
| 8 |
General formula of aliphatic carboxylic acids:
|
A. R-OH
B. R-COH
C. R-CO-R
D. RCOOH
|
| 9 |
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
|
| 10 |
When the change in concentration is 6 x 10-4 mol dm-3 and time for that change is 10 seconds the rate of reaction will be
|
A. 6 x 10-3 mol dm-3 sec-1
B. 6 x 10-4 mol dm-3 se-1
C. 6 x 10-2 mol dm-3 sec-1
D. 6 x 10-5 mol dm-3 sec-1
|
| 11 |
At which oxidation state Cu achieves electronic configuration of Zn+2
|
A. 0
B. +2
C. +1
D. +3
|
| 12 |
Which substance among the following used in points to improve the mechanical properties?
|
A. filter
B. binder
C. pigment
D. stablizer
|
| 13 |
1-chloropropane and 2.chlorpropane are isomers of each other, the type of isomerism in these two is called
|
A. Cis-trans isomerisn
B. Position isomerism
C. Chain isomerism
D. Functional group isomerism
|
| 14 |
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
|
| 15 |
The chemical reactivity of glass is reduced by the use of
|
A. fluxes
B. formers
C. stabilizers
D. none of the above
|
| 16 |
Hard water can block radiators due to formation of
|
A. Insoluble calcium and magnesium salts
B. Insoluble sodium salts
C. In soluble phosphate salts
D. Insoluble potassium salts
|
| 17 |
Active sulphonating agent during sulphonation of benzene is
|
A. SO2
B. SO3
C. SO3H
D. SO3+
|
| 18 |
Which one of the following amino acids is basic in nature?
|
A. Glycine
B. Alanine
C. Lysine
D. Glutamic acid
|
| 19 |
To become a carbohydrate a compound must contain
|
A. 2-carbon
B. 3-carbon
C. 4-carbon
D. 5-carbon
|
| 20 |
Polarity of a molecule is expressed in terms of
|
A. Bond strength
B. Dipole moment
C. Bond length
D. Shape
|
| 21 |
Urea is the most widely used nitrogen fertilizers in Pakistan. Its composition is
|
A. NH2CO
B. N2H5CO2
C. N2H4CO2
D. N2H4CO
|
| 22 |
Elements having high ionization potential values are
|
A. metals
B. non- metal
C. liquids
D. solid
|
| 23 |
In which molecule. all atoms are coplanar?
|
A. CH4
B. BF3
C. NH3
D. PH3
|
| 24 |
Which one of the following is water soluble vitamin?
|
A. Niacin
B. Riboflavin
C. Trypsin
D. Ascorbic acid
|
| 25 |
The ionization energy
|
A. generally increases from left to right in a period
B. increases from top to bottom in a group
C. does not change in a period
D. does not change in a group
|
| 26 |
Part of fresh water consumed in industry is:
|
A. 1%
B. 2%
C. 69%
D. 23%
|
| 27 |
Polymide is formed due to the condensation od hexane-dioic acid with
|
A. Hexane-1, 5- diamine
B. Hexane-1, 6 -diamine
C. Hexane-1, 4- diamine
D. Hexane-2, 5- diamine
|
| 28 |
Which of the following is not a property of enzymes?
|
A. extraordinary speciffcity
B. reversibility of reactions
C. high efficiency
D. minimum activity at optimum T
|
| 29 |
The temperature of in the incineration of industrial and hazardous waste process has range
|
A. 900 - 1000°C
B. 250 - 500°C
C. 950 - 1300°C
D. 500 - 900°C
|
| 30 |
NO and NO2gases in atmosphere are represented by
|
A. NO
B. NO4
C. NOx
D. NxOy
|
| 31 |
Cyclone collector is used to reduce:
|
A. noise pollution
B. air pollution
C. water pollution
D. radioactive pollution
|
| 32 |
What is not correct about ∆HF
|
A. It is always negative
B. Ìts value gives an idea about the relative stability of reactants and the products.
C. Its value can be greater or less than zero
D. Value depends upon nature of bonds
|
| 33 |
Increased concentration of enzyme alkaline phosphatase is a sign of
|
A. hemophilia
B. heart disease
C. thrombosis
D. rickets
|
| 34 |
The number of moles of CO2 which contain 8.00 gm of oxygen is.
|
A. 0.75
B. 1.50
C. 0.25
D. 1.00
|
| 35 |
Which one of the following statements is wrong for gases?
|
A. gases do not have a definite shape and volume
B. volume of the gas is equal to volume of container confining the gas
C. confirmed gas exerts uniform pressure on the walls of its container in which it is enclosed
D. mass of gas cannot be determined by weighing a container in which it is enclosed
|
| 36 |
The standard electrode potential of hydrogen is arbitrarily taken at 298 K is
|
A. 1.00 volt
B. 0.00 volt
C. 10.0 volt
D. 0.10 volt
|
| 37 |
The existence of an element in more than one form is called
|
A. allotropy
B. isomorphism
C. polymorphism
D. isotropy
|
| 38 |
The shape of [Co(NH3)6]3+ complex is.
|
A. Linear
B. Octahedral
C. T Tetrahedral
D. Square planer
|
| 39 |
Fourth structure of protein structure refers to
|
A. Proteins formed of more than one monomer
B. Myoglobin is an example
C. Depends on covalent bonds
D. None of these
|
| 40 |
In cyclic structure of glucose when the position of atoms on Carbon 1 is altered one isomer changes to other. These isomers of glucose are called
|
A. Annomers
B. Position isomers
C. Meta-mess
D. Cis-trans isomers
|
| 41 |
The enthalpy change AH of a process is given by the relation
|
A. ΔΗ =ΔΕ + P∆V
B. ΔH=ΔE +W
C. ΔH =ΔΕ-ΔnRT
D. ΔΕ =ΔΗ + P∆V
|
| 42 |
The substances added in paints for improving the mechanical properties is called:
|
A. pigmein
B. filter
C. stabilizer
D. binder
|
| 43 |
Which of the following category of enzyme catalyze addition of Ammonia
|
A. Ligases
B. Lyases
C. Isomerases
D. Pepsinogen
|
| 44 |
Elimination of molecular reactions usually obey:
|
A. first order kinetics
B. second order kinetics
C. third order kinetic
D. zero order kinetic
|
| 45 |
Tertiary structure of proteins involves EXCEPT
|
A. Domains
B. Globular
C. Fibrous
D. Beta sheets
|
| 46 |
Oils and fats belong to the class of
|
A. Alcohols
B. Hydrocarbons
C. Acids
D. Esters
|
| 47 |
What will be the shape of a molecule which containstwo sigma bond pairs and one lone pair?
|
A. Linear
B. V shape
C. Tetragonal
D. Triangular
|
| 48 |
Augus smith discovered in the mid of seventeenth century:
|
A. acid
B. Base
C. Acid rain
D. Fertilizer
|
| 49 |
Which of these polymers is an addition polymer
|
A. Nylon 6, 6
B. Polystyrene
C. Terylene
D. Epoxy resin
|
| 50 |
Second order 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
|
| 51 |
Nucleic acid fist descovered in
|
A. 1868
B. 1869
C. 1900
D. 1905
|
| 52 |
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
|
| 53 |
Furan is a compound
|
A. Acyclic
B. Alicyclic
C. Heterocyclic
D. non-aromatic
|
| 54 |
The concentration of product is increasing from 30 mole/dm3 to 40mol/dm3 in 0.5 sec then rate of reaction will be------moledm-3sec-1
|
A. 0
B. 20
C. 15
D. 25
|
| 55 |
Amino acid which synthesized many hormones is
|
A. Valine
B. Phenylalanine
C. Alanine
D. Histidine
|
| 56 |
A pollutant affects
|
A. Human affects
B. Quality of life
C. Functioning of ecosystem
D. All of these
|
| 57 |
According to the general gas equation, density of an ideal gas depends upon
|
A. Pressure
B. Temperature
C. Molar mass of the gas
D. All of the above
|
| 58 |
Which one of the following statements about Glucose and sucrose is incorrect?
|
A. Both are soluble in water
B. Both are naturally occurring
C. Both are carbohydrates
D. Both are disaccharides
|
| 59 |
The hexagonal closed packing is associated with
|
A. Ag, Cu, Au
B. Zn, Cd, Hg
C. Li, Na, K
D. NaCl, KBr
|
| 60 |
Classification of polymerization into two types was suggested by
|
A. W.H Carothers
B. Staudinger
C. OSwald
D. Aspdin
|