| 1 |
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
|
| 2 |
The pH of ideal buffer is
|
A. 10
B. 7
C. Less than 7
D. 0
|
| 3 |
Which of the following is correct statement about cellulose
|
A. It is sweet is taste
B. It contain 20% amylose
C. It is used in laundering
D. It containsβ1-4-linkage
|
| 4 |
Which of the following is a strong acid
|
A. CH3COOH
B. C2H5OH
C. HCOOH
D. Phenol
|
| 5 |
Primary alcohols and aldehydes are oxidized to corresponding:
|
A. Alkanes
B. Alkenes
C. Alkynes
D. Carboxylic acids
|
| 6 |
Nitro alkanes exhibit the:
|
A. Chain isomerism
B. Positional isomerism
C. Functional group
D. Metamerism
|
| 7 |
The relationship between density and molar mass of a gas is
|
A. Directly proportional
B. Inversly proportional
C. Straight line
D. Stoichiometric
|
| 8 |
Ozone is a gas having boiling point
|
A. Unstable
B. High
C. Low
D. Moderate
|
| 9 |
Poisoning of CO can be reveresed by giving oxygen at pressure:
|
A. low
B. least
C. medium
D. High
|
| 10 |
What element is not essential for the growth of plants and not required in the fertilizers?
|
A. nitrogen
B. potassium
C. phosphorus
D. barium
|
| 11 |
Velaric acid is obtained from a herb velarian, its IUPAC name is
|
A. Propionic acid
B. Pentanoic acid
C. Butyric acid
D. Caporic acid
|
| 12 |
Which factor is helping to reduce the environmental pollution
|
A. Urbanization
B. Industrialization
C. Increase of plantation
D. Rapid growth of population
|
| 13 |
Example of essential aromatic amino acids
|
A. Theronine
B. Alanine
C. Phenyl alanine
D. Glycine
|
| 14 |
Natural water is
|
A. Pure
B. Impure
C. Acts as solute
D. Distilled
|
| 15 |
Mostly ionic compounds are produced between elements of group
|
A. IA and IIA
B. IB and VIB
C. IA. IIA and VII-A
D. IA and IB
|
| 16 |
D-block elements are also called
|
A. Non-typical transition element
B. Outer transition elements
C. Abnormal transition elements
D. Inner transition
|
| 17 |
Which of following is oxidation state of oxygen in peroxides?
|
A. -2
B. 1/2
C. -1
D. +2
|
| 18 |
Augus smith discovered in the mid of seventeenth century:
|
A. acid
B. Base
C. Acid rain
D. Fertilizer
|
| 19 |
The energy difference of d-orbitals varies from
|
A. Atom to atom
B. lon to ion
C. Electron to electron
D. proton to proton
|
| 20 |
The bond angle between any two sp hybrid orbitals is A.109.28°
|
A. 107.09°
B. 120°
C. 90°
D. 80°
|
| 21 |
Simplest Structure of a protein that has only covalent bonding between amino acids is
|
A. 2° structure
B. 3°structure
C. 1° structure
D. 4° structure
|
| 22 |
The fiber which is made from acrylonitrile as monomers:
|
A. PVC
B. rayon fiber
C. acrylic fiber
D. Polyester fiber
|
| 23 |
Water which his considered to be safe for human consumption is known as
|
A. distilled water
B. contaminated water
C. potable water
D. rain water
|
| 24 |
In a saturated solution of AgCl, the molar concentration of Ag+ and Cl- is 1.0x10(-5)M each. What is the value of Ksp
|
A. 1.0x10(-5)
B. 1.0x10(-15)
C. 0.1x10(-5)
D. 1.0x10(-10)
|
| 25 |
Out of these which nitrogen base is NOT present in DNA?
|
A. Adenine
B. Guanine
C. Uracil
D. Thymine
|
| 26 |
Which of the following metal cannot evolve hydrogen from the acetic acid
|
A. Sodium
B. Potassium
C. Magnesium
D. Copper
|
| 27 |
Why a C - Cl bond breaks by uv light
|
A. Cl is most electronegative
B. Cl is volatile
C. C - Cl bond energy is smaller than that of C - H bond energy
D. Uv light provides energy which is sufficient to break C - Cl bond and not C - H bond
|
| 28 |
Carboxylic acid can be prepared from:
|
A. Hydrolysis of alkyl nitrites
B. Reaction of CO2with Gringard's reagent
C. Hydrolysis of esters
D. All of these
|
| 29 |
Which one of the following is water soluble vitamin?
|
A. Niacin
B. Riboflavin
C. Trypsin
D. Ascorbic acid
|
| 30 |
Which of the following is a thermosetting plastic?
|
A. PVC
B. polyethylene
C. polystyrene
D. melamines
|
| 31 |
Storage form of iron
|
A. Transferrin
B. Ferritin
C. Myosin
D. Actin
|
| 32 |
Cyclone collector is used to reduce:
|
A. noise pollution
B. air pollution
C. water pollution
D. radioactive pollution
|
| 33 |
Ozone acts as:
|
A. Pollutant
B. saver
C. oxidatant
D. All of these
|
| 34 |
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
|
| 35 |
Which one of the following is not a component of environment:
|
A. biosphere
B. stratosphere
C. hydrosphere
D. lithosphere
|
| 36 |
Which one of the following is used as coagulant for purification potable water
|
A. Copper sulphate
B. Alum
C. Barium sulphate
D. Nickel sulphate
|
| 37 |
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
|
| 38 |
A complete food contains at least
|
A. Three nutrients
B. Ten nutrients
C. Six nutrients
D. Ten nutrients
|
| 39 |
Micronutrients are required in quantity ranging from:
|
A. 4----40g
B. 6------200kg
C. 6-----200g
D. 4-------40kg
|
| 40 |
CH3CH2CH2OH--------A---------B Here B is
|
A. Propyne
B. Propanal
C. Propene
D. Propane
|
| 41 |
When gaseous chemicals are transported y road or by rail they are classified as follows: flammable non-flammable poisonous which gas is poisonous:
|
A. butane
B. non-flammable
C. hydrogen
D. sulphur dioxide
|
| 42 |
In the reaction A2 (g) + 4B2 (g) <-----------> 2AB4 (g) such that ∆H < 0, the formation of AB4(g) will be favoured at
|
A. Low temperature and high pressure
B. Low temperature and low pressure
C. High temperature and low pressure
D. High temperature and high pressure
|
| 43 |
Which one is non-reducing sugar?
|
A. sucrose
B. glucose
C. fructose
D. galactose
|
| 44 |
Choose the correct statement:
|
A. SO2 affects the nucleus
B. SO2 affects plasmodesmate
C. SO2 affects cell wall
D. SO2 affects all membrane systems
|
| 45 |
Geometry of NH3 is
|
A. Tetrahedral
B. Square planer
C. Pyramidal
D. Linear
|
| 46 |
The respiration process taking place in animals depends on a difference in
|
A. Partial pressure
B. Osomotic pressure
C. Vapour pressure
D. Atomospheric pressure
|
| 47 |
During space flights, astronauts ohlained water from
|
A. Nickel cadmium cells
B. Lead accumulator
C. Fuel Cell
D. Alkaline battery
|
| 48 |
For N2: +3H2<--------> 2NH3, if Kc is 1 than value of Kp at 273K would be
|
A. 1/22.414
B. 1/(22.414)2
C. 22.414
D. 11.207
|
| 49 |
Which one of the following is not type of polemer
|
A. Copolymer
B. Homopolymer
C. Terpolymer
D. Heteropolymer
|
| 50 |
Large molecules with high molecular mass formed due to smaller units ae called:
|
A. polymer
B. macromolecule
C. micromolecule
D. a & b
|
| 51 |
The formation of acetic anhydride from acetic acid follows the mechanism
|
A. SN
B. AN
C. SE
D. AE
|
| 52 |
Bonding in MgO is an example of
|
A. lonic bond
B. Polar bond
C. Covalent bond
D. Coordination covalent bond
|
| 53 |
If temperature is 73K and volume is 146 cm3 then calculate the value of K=V/T
|
A. 5
B. 4
C. 3
D. 2
|
| 54 |
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
|
| 55 |
Enthalpy of a system can be calculated by which of following relationship
|
A. q=ΔΕ
B. q=m×S×∆T
C. q=pv
D. q=m×v×∆T
|
| 56 |
The molecular mass of a polymer is obtained by multiplying mass of the monomer unit the degree of polymerization. The degree of polymerization of PVC is 1000. What is molecular mass
|
A. 65000
B. 63000
C. 62000
D. 60000
|
| 57 |
Which behaves as insulator for animals body?
|
A. Carbohydrates
B. Proteins
C. Fats
D. Skin
|
| 58 |
The density of neon will be highest at
|
A. STP
B. 0°C, 2 atm
C. 273°C, 1 atm
D. 273°C, 2 atm
|
| 59 |
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
|
| 60 |
The temperature in the incineration of industrial and hazardous waste process has a range of:
|
A. 950-1300C
B. 250-500C
C. 500-900C
D. 900-1000C
|