Que- Which group contains elements that exist as monoatomic molecule?
a. 1
b. 2
c. 14
d. 18
Answer- 18
Que- The element having electronic configuration [kr] 4d10, 4f14,5s2,5p6,5d1,6s2 belongs to __________?
a. S-Block
b. P-Block
c. d-Block
d. f-Block
Answer- f-Block
Que- Which one of the following is a bridge element?
a. Be
b. Cl
c. K
d. P
Answer- Be
Que- Which of the following aqueous solutions would have the highest boiling point?
a. 0.20 m glucose
b. 0.20 m NaCl
c. 0.15 m CaCl2
d. 0.25 m sucrose
Answer- 0.15 m CaCl2
Que- The mass of 3.2 moles of ammonia (NH3) gas?
a. 53.4 grams
b. 54.4 grams
c. 55.4 grams
d. 56.4 grams
Answer- 54.4 grams
Que- How many moles are in 22.2 grams of Calcium chloride, CaCl2?
a. 0.2 moles
b. 0.3 moles
c. 0.4 moles
d. 0.5 moles
Answer- 0.2 moles
Que- What is the mass percent of silver in silver notrate, AgNO3?
a. 64.5%
b. 65.6%
c. 63.5%
d. 61.5%
Answer- 63.5%
Que- A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore?
a. 74% Fe
b. 75% Fe
c. 77% Fe
d. 78% Fe
Answer- 78% Fe
Que- A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula?
a. C2H6O
b. C6H18O3
c. C6H12O6
d. C2H5O
Answer- C6H18O3
Que- A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound?
a. C2H4
b. C3H6
c. C4H8
d. C5H10
Answer- C4H8
Que- The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in__________?
a. 1.8 gram of H2O
b. 12 moles of KMnO4
c. 0.6N H2SO4
d. 4.6 gram of C2H5OH
Answer- 12 moles of KMnO4
Que- The molecular formula for cholesterol is C27 H46 O. What are the degrees of unsaturation for this compound?
a. 5
b. 6
c. 7
d. 8
Answer- 5
Que- What is the density ofargon gas at a temperature of 30°C and a pressure of 1.05 atm?
a. 1.65 g/L
b. 1.67 g/L
c. 1.68 g/L
d. None of the above
Answer- 1.68 g/L
Que- The formula C6H5-CO-CH3 represents_______ ?
a. Acetone
b. Acetic acid
c. Acetophenone
d. Phenyl acetate
Answer- Acetophenone
Que- Poisonous gas present in the exhaust fumes of a jet plane is__________?
a. Flurocarbon
b. Carbon monoxide
c. Methane
d. C2H2
Answer- Carbon monoxide
Que- The O-O linkage is present in__________?
a. H2S2O3
b. H2SO8
c. H2S4O6
d. H2 S2 O6
Answer- H2SO8
Que- The number of lone pairs in XeOF4 is_________?
a. O
b. 1
c. 2
d. 3
Answer- 1
Que- Argon gas was discovered by_______?
a. Rayleigh
b. Ramsay
c. Lockerey
d. Dalton
Answer- Ramsay
Que- SO2 reacts with Cl in sunlight to form__________?
a. Sulphur dioxide
b. Sulphuryl chloride
c. Suphanyl chloride
d. All of the above
Answer- Sulphuryl chloride
Que- Oxidation state +1 for phosphorous is found in___________?
a. H3PO3
b. H3PO4
c. H3PO2
d. H2P2O7
Answer- H3PO2
Que- Electric bulb filament is made of__________?
a. Copper
b. Aluminum
c. Lead
d. Tungsten
Answer- Tungsten
Que- Tetraethyl lead is used as______?
a. Pain Killer
b. Fire Extinguisher
c. Mosquito Repellent
d. Petrol Additive
Answer- Petrol Additive
Que- The average salinity of sea water is________?
a. 3%
b. 3.5%
c. 2.5%
d. 2%
Answer- 3.5%
Que- The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:_______?
a. Bromine
b. Fluorine
c. Chlorine
d. Sulphur
Answer- Sulphur
Que- Marsh gas is_______?
a. Nitrogen
b. Ethane
c. Methane
d. Hydrogen
Answer- Methane
Que- Potassium Permanganate is used for purifying drinking water, because_________?
a. It is a sterilising agent.
b. It dissolves the impurities of water.
c. It is a reducing agent.
d. It is an oxidising agent.
Answer- It is an oxidising agent.
Que- Find the PH of a 0.001 M solution of Nitric acid HNO3?
a. 2
b. 3
c. 4
d. 5
Answer- 3
Que- Which set of quantum numbers is not allowed?
a. n=2,l=1,m1=0,ms=+1/2
b. n=2,l=1,m1=-1,ms=+1/2
c. n=2,l=0,m1=0,ms=-1/2
d. n=2,l=2,m1=1,ms=-1/2
Answer- n=2,l=2,m1=1,ms=-1/2
Que- The purpose of Smelting an ore is to________?
a. Reduce it
b. Oxidize it
c. Obtain an alloy
d. Separate volatile impurities
Answer- Reduce it
Que- Which Oxide of Manganese is amphoteric?
a. MnO2
b. Mn2O3
c. Mn2O7
d. MnO
Answer- MnO2
Que- A process used for the Concentration of Ore is________?
a. Roasting
b. Forth flotation
c. Electrolysis
d. Distillation
Answer- Forth flotation
Que- Which metal is used as a reducing agent in Smelting______?
a. C
b. Zn
c. Al
d. Cu
Answer- C
Que- Parke’s process is used in the extraction of________?
a. Iron
b. Sodium
c. Silver
d. Zinc
Answer- Silver
Que- In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________?
a. CaO+ SiO2——> CaSiO3
b. 2FeS+3O2——–> 2Fe+ SO2
c. FeSiO3———> FeSiO3
d. Fe2O3+ 3CO——–> 2Fe+ 3CO2
Answer- Fe2O3+ 3CO——–> 2Fe+ 3CO2
Que- Gypsum is______?
a. CaSO4
b. CaSO4.1/2H2O
c. CaSO4,2H2O
d. CaSO4.3H2O
Answer- CaSO4,2H2O
Que- Basicity of orthophosphoric acid is________?
a. 2
b. 3
c. 4
d. 5
Answer- 3
Que- Ce58 is a member of__________?
a. S-block
b. P-block
c. d-block
d. f-block
Answer- f-block
Que- Electronic Configuration of Calcium (Ca) atom may be written as________?
a. Ne, 4p2
b. Ar, 4s2
c. Ne, 4s2
d. Kr,4p2
Answer- Ar, 4s2
Que- A 10 volume solution of H2O2 means_______?
a. 10 grams of H2O2 solution liberate 10 mL of O2 at STO
b. 10 gram equivalents of H2O2 liberates 10 mL of O2 at STP
c. 10 litres of H2O2 liberates 19 mL of O2 at STP
d. 1mL of solution of H2O2 liberates 10 mL of O2 at STP
Answer- 1mL of solution of H2O2 liberates 10 mL of O2 at STP
Que- The volume strength of 1.5 N H2O2 solution is_______?
a. 4.8
b. 5.2
c. 8.8
d. 8.4
Answer- 8.4
Que- The structure of H2O2 is_______?
a. Planar
b. Non- polar
c. Spherical
d. Linear
Answer- Non- polar
Que- Which of the following element has the maximum electron affinity_____?
a. Cl
b. Br
c. I
d. F
Answer- Cl
Que- The type of hybridisation of boron in diborane is______?
a. Sp- hybridisation
b. Sp2- hybridisation
c. Sp3- hybridisation
d. Sp3d2- hybridisation
Answer- Sp- hybridisation
Que- Which of the following shows electrical conduction_____?
a. Potassium
b. Graphite
c. Diamond
d. Sodium
Answer- Graphite
Que- Cassiterite is an ore of_______?
a. Mn
b. Ni
c. Sb
d. Sn
Answer- Sn
Que- Percentage of lead in lead pencil is________?
a. Zero
b. 20
c. 80
d. 70
Answer- Zero
Que- In borax bead test which compound is formed_________?
a. Ortho burate
b. Meta borate
c. Double oxide
d. Tetra borate
Answer- Meta borate
Que- Water molecule is________?
a. V-shaped
b. Angular
c. Pyramidal
d. Triangular planer
Answer- V-shaped
Que- I3( Tri-iodine) has shape_________?
a. Trigonal bipyramidal
b. Linear
c. Square bipyramidal
d. Both A and C
Answer- Linear
Que- BeCl2 has the hybrid orbitaks of type_______?
a. Sp2
b. Sp3
c. Sp
d. dsp2
Answer- Sp
Que- Molecular orbital Theory is also called_________?
a. Bonding theory
b. Band theory
c. Antibondingtheory
d. π and σ bonding theory
Answer- Antibondingtheory
Que- Formula of Galena is________?
a. PbS
b. HgS
c. AS2S3
d. FeS2
Answer- PbS
Que- Ethylene diammine is ligand________?
a. mono dentate
b. Bi dentate
c. tri dentate
d. Poly dentate
Answer- Bi dentate
Que- The amount of Zinc (at. Wt=65) necessary to produce 224 ml of H2 by the reaction with an acid will be______?
a. 0.065gm
b. 0.65gm
c. 6.5gm
d. 7.5gm
Answer- 7.5gm
Que- Which of the following compounds is not soluble in HNO3___?
a. CuS
b. CdS
c. PbS
d. AgCl
Answer- AgCl
Que- Following are the anions of soap which form Ca and Mg ions which we see as curd in water
a. Sodium hexadecanoate
b. Sodium octadecanoate
c. Sodium pentadecanoate
d. Both A & B
Answer- Both A & B
Que- The hybridization of nitrogen atom in pyridine is_______?
a. Sp
b. Sp2
c. Sp3
d. It is not hybridized
Answer- Sp2
Que- The IUPAC name of pyridines is__________?
a. Azolo
b. Azine
c. Azolidins
d. Diazine
Answer- Azine
Que- How many isomeric aldoses are possible for the molecular formula C6H12O6?
a. 2
b. 4
c. 7
d. 16
Answer- 16
Que- The systematic name of sucrose is_______?
a. 1-α-D- glucopyranosyl-2-β-D-fructopyranoside
b. 11-α-D-glucopyranosyl-2-β-D-fructofuranoside
c. 1-α-D- glucofuranosyl-2-α-D- fructopyranoside
d. 1-β- D- glucofuranosyl-2-α- D- fructofuranoside
Answer- 1-α-D- glucopyranosyl-2-β-D-fructopyranoside
Que- Treatment of sucrose with conc. HNO3 gives__________?
a. Nitrosucrose
b. Glucose+ fructose
c. Oxalic acid
d. Laevulinic acid
Answer- Nitrosucrose
Que- Alpha (α) particles are helium (He) nucleus with a charge of __________ ?
a. e
b. 2e
c. 3e
d. 4e
Answer- 2e
Que- Elements which emit natural radioactivity are known as __________ ?
a. Radio elements
b. Active elements
c. Radioactive elements
d. Nuclear elements
Answer- Radioactive elements
Que- A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________ ?
a. Beta particle
b. Gamma particle
c. Alpha particle
d. Negative particle
Answer- Alpha particle
Que- In SI base units, 1 Bq is equal to __________ ?
a. 10 disintegration per second
b. 1.5 disintegration per second
c. 0.01 disintegration per second
d. 1 disintegration per second
Answer- 1 disintegration per second
Que- Chromatography is used to separate _________ ?
a. Solution
b. Mixtures
c. Molecules
d. Atoms
Answer- Mixtures
Que- In a group, atomic radii increase due to successive increase of _________ ?
a. Electronic shells
b. Proton shells
c. Neutron shells
d. Nucleus
Answer- Electronic shells
Que- Distance at which attractive forces of hydrogen overcome repulsive forces is __________ ?
a. 75.2pm
b. 75.3pm
c. 75.5pm
d. 75.4pm
Answer- 75.4pm
Que- Quantum numbers are __________ ?
a. Arithmetical values
b. Numerical values
c. Leometric values
d. Logical values
Answer- Numerical values
Que- Column of manometer which faces liquid is __________ ?
a. Raised
b. Depressed
c. Compressed
d. Remains same
Answer- Depressed
Que- Process used to separate insoluble particles from liquids is ___________ ?
a. Drying
b. Filtration
c. Sieving
d. Extraction
Answer- Filtration
Que- Effective volume is usually taken for ____________ ?
a. 2 moles of gas
b. 1 mole of gas
c. 5 moles of gas
d. 3moles of gas
Answer- 1 mole of gas
Que- In whole Periodic Table which element Is Most Reducing Agent ?
a. Chlorine
b. lithium
c. Helium
d. Neon
Answer- lithium
Que- One fathom is equal to:__________?
a. 6 feet
b. 6 meters
c. 60 feet
d. 100 cm
Answer- 6 feet
Que- What are the metal bearing rocks called?
a. Bitumen
b. Bauxite
c. Metalloids
d. Ores
Answer- Ores
Que- Soil pollution is caused by:_________?
a. Aerosol
b. Ozone
c. Acid rain
d. PAN
Answer- Acid rain
Que- Radiations are harmful as it:___________?
a. Causes skin cancer
b. Causes anemia
c. Alters body tissue
d. is unstable
Answer- Causes skin cancer
Que- The practical problem in Hydrogen production is it:______________?
a. Weight
b. Valency
c. Size
d. Chemical property
Answer- Weight
Que- The number of ions produced by [Pt(NH3)]Cl2?
a. 4
b. 2
c. 3
d. 5
Answer- 3
Que- Which of the following is solid?
a. Water
b. Stone
c. Both
d. None
Answer- Stone
Que- Barret esophagus is good example of__________?
a. Atrophy
b. Dysplasia
c. Metaplasia
d. Hypertrophy E. Hyperplasia
Answer- Metaplasia
Que- Which gas is used for artificial ripening of green fruit ?
a. Carbon dioxide
b. Acetylene
c. Ethane
d. Ethylene
Answer- Ethylene
Que- Phonon is Quantum of___________?
a. Longitudinal wave
b. Elastic wave
c. Transverse wave
d. Electromagnetic wave
Answer- Elastic wave
Que- The concept of ensemble was introduced by____________?
a. Boltzmann
b. Gibbs
c. Carnot
d. Mexwell
Answer- Gibbs
Que- Which molecule have stronger London dispersion forces?
a. Hydrogen gas
b. Water
c. Bromine
d. Hydrochloric acid
Answer- Water
Que- Urea as a fertilizer contains:____________?
a. 57% N
b. 73% N
c. 46% N
d. 53% N
Answer- 46% N
Que- The gas dissolved in water that makes it basic is :
a. Ammonia
b. Sulphur dioxide
c. Hydrogen
d. Carbon dioxide
Answer- Ammonia
Que- Which of the following acts as promoter for iron in Haber's process?
a. Mn
b. Mo
c. Mg
d. W
Answer- Mo
Que- One property of ammonia is
a. It is insoluble in water
b. It is a odourless gas
c. It is a yellowish gas
d. Its aqueous solution turns red litmus blue
Answer- Its aqueous solution turns red litmus blue
Que- Which one of the following is used for dating very old objects of archaeological importance?
a. Phosphorus-31
b. Tritium
c. Radium
d. Carbon-14
Answer- Carbon-14
Que- In which of the following substances all carbon atoms are quaternary in nature ?
a. Graphite
b. Diamond
c. Teflon
d. Napthalene
Answer- Diamond
Que- Cooking gas is a mixture of
a. Methane and ethylene
b. Carbon dioxide and oxygen
c. Butane and propane
d. Carbon monoxide and carbon dioxide
Answer- Butane and propane
Que- Thermal electricity is generated by using which of these ?
a. Coal only
b. Coal and Natural Gas only
c. Coal, Natural Gas and Petroleum
d. None of these
Answer- Coal, Natural Gas and Petroleum
Que- Which of the following is the major constituent of LPG?
a. Methane
b. Ethane
c. Propane
d. Butane
Answer- Butane
Que- Which variety of coal contains recognisable traces of the original plant material ?
a. Anthracite
b. Lignite
c. Peat
d. Bitumen
Answer- Peat
Que- Which of the following processes is used for the production of Biodiesel ?
a. Transamination
b. Transcription
c. Transesterification
d. Translation
Answer- Transesterification
Que- Which of the following is used in welding broken pieces of iron rails and machine parts?
a. Aluminium sulphate
b. Solder
c. Aluminium powder
d. None of the above
Answer- Aluminium powder
Que- Of the following commonly used materials, the one that is not an alloy is
a. Steel
b. Brass
c. Bronze
d. Copper
Answer- Copper
Que- The manufacture of iron from iron ore involves the process of
a. Oxidation
b. Reduction
c. Fractional distillation
d. Electrolysis
Answer- Reduction
Que- The manufacturing of iron from iron ore involves the process of
a. Oxidation
b. Reduction
c. Electrolysis
d. Fractional distillation
Answer- Reduction