Que- Which of the following statement is correct
a. size of Cl atoms > Cl- ion
b. size of Na+ ion < Na atom
c. size of Na atom < Na+ ion
d. Cl- < Na+
Answer- size of Na+ ion < Na atom
Que- Which of the following is mineral fibre.
a. teflon
b. asbestos
c. saran
d. acrylic
Answer- asbestos
Que- Which catalyst is used in contact process?
a. Fe2O3
b. V2O5
c. SO3
d. Ag2O
Answer- V2O5
Que- The hardest of the following solids is
a. sodium
b. diamond
c. graphite
d. magnesium
Answer- diamond
Que- Which of the following elements has greater 1st ionization energy
a. "B"
b. "C"
c. "N"
d. "O"
Answer- "N"
Que- Which of the solid does not contain covalent bond
a. copper
b. ice
c. diamond
d. graphite
Answer- copper
Que- Which of the following molecule is polar
a. CCI4
b. CO2
c. BF3
d. none of the above
Answer- none of the above
Que- Which of the following theories is superior to others
a. VSEPR
b. VBT
c. MOT
d. none of the above
Answer- MOT
Que- Which of the following is not characteristics of reversible reaction
a. whole amount of reactant does not change into product
b. chemical equilibrium is established
c. a catalyst changes the direction of reaction
d. rate of forward reaction decreases as reaction proceeds
Answer- a catalyst changes the direction of reaction
Que- Which of the following points are important in connection with equilibrium constant.
a. Kc is constant at given temperature
b. Kc is unaffected by change in concentration of reactants or products
c. Kc indicates the extent of reaction but not about the rate of reaction.
d. All of the above
Answer- All of the above
Que- A solution has pH = 0 its H+ ion concentration is
a. 1 x 10-1
b. 1 x 10-14
c. 1 x 10-7
d. 1
Answer- 1
Que- Solubility of CaF2 is 2.0x10-4 gdm-3 then Ksp of CaF2 is
a. 0 x 10-8
b. 2 x 10-11
c. 0 x 10-8
d. 0 x 10-12
Answer- 2 x 10-11
Que- 1 mole of electron has mass in microgram
a. 008 x 10-3
b. 5 x 10-4
c. 84 x 10-4
d. 673 x 10-3
Answer- 5 x 10-4
Que- The unit of molality is
a. moles dm-3
b. moles kg-1
c. gram dm-3
d. none
Answer- moles kg-1
Que- The use of antifreeze in the automobile radiator is an important application of
a. constitutive property
b. additive property
c. colligative property
d. intrinsic property
Answer- colligative property
Que- A solution can be both
a. dilute and concentrated
b. dilute and saturated
c. saturated and unsaturated
d. saturated and super saturated
Answer- dilute and concentrated
Que- In which of the following type of reactions energy of reactant is greater than energy of product
a. endothermic
b. exothermic
c. unpredictable
d. same
Answer- exothermic
Que- Which of the following elements react with steam to produce H2 gas.
a. Pd
b. Ni
c. Sn
d. All of the above
Answer- All of the above
Que- The unit of the rate constant (k) is same as that of rate of reaction
a. First order reaction
b. Second order reaction
c. Zero order reaction
d. Third order reaction
Answer- Zero order reaction
Que- Which of the elements do not fall in stair case of the modern periodic table
a. Si
b. As
c. Te
d. None of the above
Answer- None of the above
Que- Acid present in acid rain may be
a. H2SO4
b. HNO3
c. both a and b
d. none of the above
Answer- both a and b
Que- Across short period the melting and boiling point increase upto
a. IIIA group
b. IVA group
c. VA group
d. VIA group
Answer- IVA group
Que- Which of the following elements conduct electricity and also melts below 100Degree Centigrade
a. Aluminium
b. Sodium
c. Carbon
d. Sulphur
Answer- Sodium
Que- Which of the following is the formula of chrome red.
a. Pb3 O4
b. 2Pb CO3 - Pb (OH)2
c. Pb Cr O4 - Pb (OH)2
d. Pb2O
Answer- Pb3 O4
Que- The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is
a. Ethylene iodide
b. Ethylene bromide
c. Ethylene chloride
d. Ethylene fluoride
Answer- Ethylene bromide
Que- Regular coiling or zigzagging of polypeptide through hydrogen bonding is its
a. Quantum structure
b. Secondary structure
c. Tertiary structure
d. Primary structure
Answer- Secondary structure
Que- The soul of chemistry is dealing with___________?
a. Internal structural changes in matter
b. Composition of matter
c. Properties of matter
d. Composition and properties of matter
Answer- Composition and properties of matter
Que- The radioactive isotope of hydrogen is called___________?
a. tritium
b. deuterium
c. protium
d. ortho-hydrogen
Answer- tritium
Que- Electron was discovered by?
a. Michael Faraday
b. James Maxwell
c. Yuri Gagarin
d. J.J Thomson
Answer- J.J Thomson
Que- Sodium carbonate is produced by____________?
a. haber process
b. Amonia solvay process
c. decons process
d. lead chamber process
Answer- Amonia solvay process
Que- Which of the following is a substance?
a. Sea water
b. Brass
c. Tape water
d. Graphite E. Sand
Answer- Graphite
Que- Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?
a. ionic substances
b. metallic substances
c. molecular solids
d. covalent network solids
Answer- metallic substances
Que- All of the following substances are crystalline except_____________?
a. Ice
b. Diamond
c. Sucrose
d. Plastic
Answer- Plastic
Que- Covalent network crystals have_____________?
a. higher melting point then molecular crystals
b. lower melting point then molecular crystals
c. discrete molecules linked by Van der waals forces
d. hydrogen bonding
Answer- higher melting point then molecular crystals
Que- What is a mixture of Potassium Nitrate Powdered Charcoal and Sulphur called?
a. Paint
b. Glass
c. Gun Powder
d. Cement
Answer- Gun Powder
Que- Diameter of an atom is in the order of________________?
a. 0.2m
b. 0.2mm
c. 0.2nm
d. 0.2pm
Answer- 0.2nm
Que- Mass spectrometer is used to determine Mass number of isotopes and___________________?
a. Atomic number
b. Relative abundance
c. Electronic configuration
d. All of the above
Answer- Relative abundance
Que- The number of peaks obtained in mass spectrometry shows____________________?
a. Relative abundance
b. Average mass of element
c. Number of isotopes
d. Relative isotopic mass
Answer- Number of isotopes
Que- Empirical formula of chloroform is____________________?
a. CH2 C12
b. CH3C1
c. CC14
d. CHCL3 Read More Details about this Mcq
Answer- CHCL3
Que- Molecular mass of water (18g) means__________________?
a. 1-mole molecules of water
b. 1-gram molecule of water
c. 3-gram atoms
d. all
Answer- all
Que- Which of the following statements about isotopes is correct ?
a. Isotopes with odd atomic number are abundant
b. Isotopes with odd atomic number and even mass number are abundant
c. Isotopes with even atomic number and even mass number are abundant
d. Isotopes with even atomic number and odd mass no are abundant
Answer- Isotopes with even atomic number and even mass number are abundant
Que- The number of isotopes of elements with even mass number and even atomic number are ________________?
a. 280
b. 300
c. 154
d. 54
Answer- 154
Que- Which of the following terms is not used for ionic compound ?
a. formula unit
b. empirical formula
c. molecular formula
d. formula mass
Answer- molecular formula
Que- moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is______________________?
a. 0.18 mole
b. 0.27 mole
c. 0.24 mole
d. 0.09 mole
Answer- 0.18 mole
Que- Which one of the following has the maximum number of isotopes ?
a. oxygen
b. carbon
c. tin
d. chlorine
Answer- tin
Que- 1 a.m.u =__________________?
a. 1.6 x 10-27 kg
b. 1.6 x 10-24 kg
c. 1.6 x 10-26 kg
d. 1.6 x 10-28 kg
Answer- 1.6 x 10-27 kg
Que- Which of the following are isoelectronic species ?
a. H+ H H-
b. Li+ Na+ K+
c. C1- Br- I
d. F- Ne Na+
Answer- F- Ne Na+
Que- Molecular ions are formed by passing______________________?
a. High energy electron beam
b. ? – particle
c. X-rays
d. All of the above
Answer- All of the above
Que- Which one is true about isotope ?
a. Same number of neutrons
b. Same mass number
c. Same physical properties
d. Same chemical properties
Answer- Same chemical properties
Que- Which of the following ion formation is always exothermic ?
a. Uni-negative
b. Uni-positive
c. Di-negative
d. Di-positive
Answer- Uni-negative
Que- The sample of isotopes of an element which needs not to be vaporized in the vaporization chamer_________________?
a. Gas
b. Liquid
c. Volatile solid
d. All
Answer- Gas
Que- Avogadros number may represent_________________?
a. volume of particles
b. number of particles
c. mass of particles
d. All of the above
Answer- All of the above
Que- Size of molecule depends upon________________?
a. Atomicity
b. Shape of molecule
c. Both A and B
d. Difficult to predict
Answer- Both A and B
Que- Which of the following terms is used for the mass of chlorine 35.5 ?
a. relative atomic mass
b. mass number
c. atomic weight
d. relative isotopic mass
Answer- relative atomic mass
Que- Which one of the following is not the mono isotopic element ?
a. arsenic
b. uranium
c. iodine
d. nickel
Answer- uranium
Que- The mass of decimole of electrons (NA) is___________________?
a. 1.008 mg
b. 0.184 mg
c. 0.054 mg
d. 5.4 mg
Answer- 0.054 mg
Que- Which of the following statements is wrong about isotopes ?
a. they possess different mass number
b. they possess different physical properties
c. they possess same chemical properties
d. they possess different position in the periodic table
Answer- they possess different position in the periodic table
Que- Qualitative analysis is carried out for _________________?
a. identification of elements
b. estimation of amounts of elements
c. molar ration of elements
d. molar volume of elements
Answer- identification of elements
Que- Combustion analysis is performed to determine__________________?
a. Empirical formula
b. Molecular mass
c. Molecular formula
d. Formula mass
Answer- Empirical formula
Que- Isotopes differ in_________________?
a. properties which depend upon mass
b. arrangement of electrons in orbitals
c. chemical properties
d. all of the above
Answer- properties which depend upon mass
Que- Which of the following methods is used to estimate hydrogen in an organic compound ?
a. Combustion method
b. Dumas method
c. Kjeldahls method
d. All of the above methods are for different purposes
Answer- Combustion method
Que- The nucleus of an atom of every element will always contain____________________?
a. neutrons
b. protons and electrons
c. protons
d. protons and neutrons
Answer- protons
Que- When 0.5 mole of phosphoric acid is dissolved in aqueous solution how many moles of -ve and +ve ions are collected altogether ?
a. 0.5
b. 1
c. 1.5
d. 2
Answer- 2
Que- Dempsters mass spectrometer has number of zones / parts_________________?
a. 5
b. 4
c. 3
d. 2
Answer- 5
Que- All the following variables are used to describle gases except__________________?
a. pressure
b. volume
c. moles
d. density
Answer- density
Que- Methyl alcohol is not used as___________________?
a. a solvent
b. an anti freezing agent
c. a substitute for petrol
d. for denaturing of ethyl alcohol
Answer- a substitute for petrol
Que- Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse ?
a. 20cm3/min
b. 40cm3/min
c. 160cm3/min
d. 2.5cm3/min
Answer- 40cm3/min
Que- As a substance moves from a solid to a liquid all of the following changes occur except ?
a. molecules become more disordered.
b. K.E of the molecules decreases
c. intermolecular forces become weaker.
d. molecules move more frequently.
Answer- K.E of the molecules decreases
Que- The rectified spirit is________________?
a. 12% alcohol
b. 90% alcohol
c. 95% alcohol
d. 100% alcohol
Answer- 95% alcohol
Que- Which of the following solids show anisotropy___________________?
a. Plastic
b. Glass
c. Rubber
d. None of the above
Answer- None of the above
Que- Butyl chloride gives possible isomers ?
a. 2
b. 3
c. 4
d. 5
Answer- 4
Que- Metallic crystals are soluble in________________?
a. Polar solvent
b. Non polar solvent
c. Fused metal
d. None
Answer- Fused metal
Que- Paramagnetic behaviour of substance is measured by a balance called___________________?
a. Analytical balance
b. Guoys balance
c. Electrical balance
d. Single beam balance
Answer- Guoys balance
Que- Which of the following properties prove that cathode rays are material in nature_________________?
a. they cast shadow
b. they possess momentum
c. they are negatively charged
d. all of the above
Answer- they possess momentum
Que- When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is______________?
a. 0.33 nm
b. 0.34 nm
c. 0.35 nm
d. 0.36 nm
Answer- 0.33 nm
Que- 1 mole of electron has mass in microgram_________________?
a. 1.008 x 10-3
b. 5.5 x 10-4
c. 1.84 x 10-4
d. 1.673 x 10-3
Answer- 5.5 x 10-4
Que- The use of antifreeze in the automobile radiator is an important application of__________________?
a. constitutive property
b. additive property
c. colligative property
d. intrinsic property
Answer- colligative property
Que- At which electrode the reduction of the solution is occurring in Al-Ag cell_____________?
a. A
b. Ag
c. Both
d. Neither
Answer- Ag
Que- In which of the following type of reactions energy of reactant is greater than energy of product________________?
a. endothermic
b. exothermic
c. unpredictable
d. same
Answer- exothermic
Que- Which of following metals can be displaced by all other metals from its solution ?
a. Ag
b. A
c. Au
d. Cu
Answer- Au
Que- Which of the elements do not fall in stair case of the modern periodic table__________________?
a. Si
b. As
c. Te
d. None of the above
Answer- None of the above
Que- Across short period the melting and boiling point increase upto __________________?
a. IIIA group
b. IVA group
c. VA group
d. VIA group
Answer- IVA group
Que- Which of the following is the formula of chrome red ?
a. Pb3 O4
b. 2Pb CO3 – Pb (OH)2
c. Pb Cr O4 – Pb (OH)2
d. Pb2O
Answer- Pb3 O4
Que- Regular coiling or zigzagging of polypeptide through hydrogen bonding is its___________________?
a. Quantum structure
b. Secondary structure
c. Tertiary structure
d. Primary structure
Answer- Secondary structure
Que- In the van der Waals equation (P + n2a / v2) (v – nb) = nRT which of the following statement is not true ?
a. n2a/v correct for the intermolecular forces.
b. nb correct for the volume occupied by gas molecules.
c. at high densities the equation reduces to the ideal gas law
d. all of the above statements are correct.
Answer- at high densities the equation reduces to the ideal gas law
Que- The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent ?
a. alkaline aquenous iodine
b. aqueous bromine
c. Fehling solution
d. aqueous NaOH
Answer- alkaline aquenous iodine
Que- When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?
a. phenol is unsaturated
b. 2-bromophenol is insoluble in water
c. a hydroxy group makes the benzene ring more susceptible to electrophilic attack
d. acid-base reaction
Answer- a hydroxy group makes the benzene ring more susceptible to electrophilic attack
Que- If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature exis at________________?
a. 0?C
b. 273.16K
c. ?273.16 K
d. ?273.16?C
Answer- ?273.16?C
Que- Benzene is a good solvent for__________________?
a. fats
b. resins
c. iodine
d. all the above
Answer- all the above
Que- Which of the following element doesnot show allotropy_________________?
a. Carbon
b. Arsenic
c. Nitrogen
d. Sulphur
Answer- Nitrogen
Que- Purines and pyrimidines are_________________?
a. Enzymes
b. Nitrogenous bases
c. Carbohydrates
d. Lipids
Answer- Nitrogenous bases
Que- All the transition elements show_________________?
a. Similar physical properties
b. Similar chemical properties
c. Both A and b
d. None
Answer- None
Que- In solids the temperature is the measure of__________________?
a. Average kinetic energy of molecules
b. Vibrational kinetic energy
c. Translational kinetic energy
d. None of the above
Answer- Vibrational kinetic energy
Que- Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal ?
a. aluminium can be recycled
b. aluminium has very low density
c. aluminium is the most abundant metal in the earth crust
d. aluminium is resistant to corrosion by organic acids.
Answer- aluminium is resistant to corrosion by organic acids.
Que- On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?
a. pink
b. black
c. yellow
d. brick red
Answer- brick red
Que- What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3 ?
a. 6
b. 4
c. 3
d. 2
Answer- 2
Que- Which catalyst is used in contact process ?
a. Fe2O3
b. V2O5
c. SO3
d. Ag2O
Answer- V2O5
Que- Which of the following elements has greater 1st ionization energy__________________?
a. B
b. C
c. N
d. O
Answer- N
Que- Which of the following molecule is polar__________________?
a. CCI4
b. CO2
c. BF3
d. none of the above
Answer- none of the above
Que- Which of the following points are important in connection with equilibrium constant ?
a. Kc is constant at given temperature
b. Kc is unaffected by change in concentration of reactants or products
c. Kc indicates the extent of reaction but not about the rate of reaction.
d. All of the above
Answer- All of the above