1050 + Interview Questions in CLASS-11 IN GENERAL AWARENESS Page 3 InterviewSolution

101.	Which of the following represents the correct order of increasing first ionisation enthalpy for `Ca,Ba,Se`, and `Ar`?A. `Ca lt S lt Ba lt Se lt Ar`B. `S lt Se lt Ca lt Ba lt Ar`C. `Ba lt Ca lt Se lt S lt Ar`D. `Ca lt Ba lt S lt Se lt Ar`
Answer» Correct Answer - C Ionisation energy increases along a period from left to right and decreases down a group. The position of given elements in the periodic table is as ` {:(2,16,18),(Ca,S,Ar),(Ba,Se,):}` Thus, the order of increasing `DeltaHIE_(1)` is `Ba lt Ca lt Se lt S lt Ar`.

Discussion

102.	Which has the highest second ionisation potenitial?A. NitrogenB. carbonC. OxygenD. Fluorine
Answer» Correct Answer - C In second transition electron is to be removal from half-filled orbital.

Discussion

103.	The element with highest value of ionisation potential isA. PotassiumB. HeliumC. HydrogenD. Xenon
Answer» Correct Answer - B `He` and `Xe` belongs to same group but `He` has higher ionisation energy because of small size.

Discussion

104.	In which of the following process highest energy is absorbed?A. `Cu rarr Cu^(+)`B. `Br rarr Br^(-)`C. `I rarr I^(-)`D. `Li rarr Li^(+)`
Answer» Correct Answer - A In `Cu` it has completely filled d-orbital so highest energy is absorbed when it convert in `Cu^(+)` ion.

Discussion

105.	Which one of the following has the highest electronegativity?A. `Br`B. `Cl`C. `P`D. `Si`
Answer» Correct Answer - B Electronegativity increases when moves towards period and decrease when toward group.

Discussion

106.	Which is not the correct order of electronegativity?A. `ClgtSgtPgtSi`B. `SigtAlgtMggtNa`C. `FgtClgtBrgtI`D. None if these
Answer» Correct Answer - D All have correct order of electronegativity.

Discussion

107.	In `C,N,O` and `F` the electronegativityA. Decrease from carbon to fluorineB. Increases from carbon to fluorineC. Increases from carbon to oxgen and then decreasesD. Decreases from carbon to oxygen and then increases
Answer» Correct Answer - B Electronegativity decreases down the group as atomic radius increases.

Discussion

108.	Which of the following has the least electron affinity in `kJ mol^(-1)`?A. OxygenB. carbonC. NitrogenD. Boron
Answer» Correct Answer - C

Discussion

109.	Electron affinity is the lowest forA. NitrogenB. carbonC. OxygenD. sulphur
Answer» Correct Answer - B

Discussion

110.	Electron affinity depends onA. Atomic sizeB. Nuclear chargeC. Atomic numberD. Atomic size and nuclear charge both
Answer» Correct Answer - D

Discussion

111.	The electron affinity ofA. Carbon is greater than oxygenB. Sulphur is less than oxygenC. Iondine is greater than bromieD. Borimine is less than chlorine
Answer» Correct Answer - D

Discussion

112.	Assertion: Ionisation potential across the period is `NaltAlltMgltSi`. Reason : Ionisation potential decreases with decrease in atomic size.A. If both assertion and reason are true and reason is the correct explanation of assertionB. If the assertion and reason are true but reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true.
Answer» Correct Answer - C Assertion is true but reason is false. Ionisation potential decreases with increase in atomic size and also for a given a shell. I.E. Is in given order.

Discussion

113.	Increasing order of electron affinity isA. `N lt O lt Cl lt Al`B. `O lt N lt Al lt Cl`C. `Al lt N lt O lt Cl`D. `Cl lt N lt O lt Al`
Answer» Correct Answer - C

Discussion

114.	Wiht increasing atomic number in a certain periodA. the chemical reacity decreasesB. The chemical reactivity character increaseC. the electropositive character increasesD. the electronegative character increase
Answer» Correct Answer - D The electronegativity character increases as the size decrease .

Discussion

115.	If the ionisation potential is `IP`, electron affinity is `EA` and electronegative is `X`, which of the following relation is correct?A. `2X-EA-IP=0`B. `2EA-X-IP=0`C. `2IP-X-EA=0`D. All of these
Answer» Correct Answer - A `X=(IP+EA)/(2)` `2X-IP-EA =0`.

Discussion

116.	Which of the following has no unit?A. Electro negativityB. Electron affinityC. Ionisation energyD. Excitation potential
Answer» Correct Answer - A Electronegative is the property of a bonded atom. The relative on an atom to attract the shared pair of electron toward itself is called electronegativity.

Discussion

117.	Which of the following statements is not correct regarding the class Ascomycetes?A. Conidia are the asexual spores produced endogenously on conidiophores.B. Ascospores are the sexual spores produced endogenously in asci.C. Aspergillus, Neurospora and Claviceps are Ascomycetes fungi.D. Mycelium is generally branced and septate in Ascomycetes.
Answer» Correct Answer - A In majority of Ascomycetes, the common mode of asexual reproduction is through the formation of conidia (singular-conidium). Conidia are non-motile fungal mitospores which are produced exogenously from the tips and sides pf hypae called conidiophores.

Discussion

118.	Which of the following does not apply to ascomycetesA. Mycelium is coenocytic and aseptateB. Commonly known as sac fungiC. Asexual spores called conidia are produced exogenouslyD. Sexual spores called ascospores are produced endogenously.
Answer» Correct Answer - A Mycelium is branched and septate.

Discussion

119.	Which of the following does not apply to ascomycetesA. Mycelium is septate and branchedB. Commonly known as algal fungiC. Asexual spores called conidia are produced exogenouslyD. Sexual spores called ascospores are produced endogenously.
Answer» Correct Answer - B Commonly known as sac fungi.

Discussion

120.	The deuteromycetous fungi member were often moved to ascomycetes and basidiomycetes after the identification ofA. Sexual phaseB. Vegetative phaseC. Asexual phaseD. None of the above
Answer» Correct Answer - A Deuteromycetes member were often moved to ascomycetes and basidimycetes after the identification of sexual phase.

Discussion

121.	In Riccia / Marchantia the rhizoids areA. Unicellular and branchedB. Multicellular and branchedC. Multicellular and unbranchedD. Unicellular and unbranched
Answer» Correct Answer - D In Riccia or Marchantia the rhizoids are unicellular and unbranched.

Discussion

122.	How many `s`-block elements are known ?
Answer» Correct Answer - Thirteen Hydrogen `(1)`, alkali metals `(6)`, alkaline earth element `(6)`.

Discussion

123.	Which block of elements consists of metals, non metals and metalloids ?
Answer» Correct Answer - `p`-block `p`-block elements

Discussion

124.	Which block of elements consists of metals, non metals and metalloids ?A. `f`-blockB. `s`-blockC. `d`-blockD. `p`-block
Answer» Correct Answer - D Only `p`-block shown such a great variety. The elements of other blocks are all metals.

Discussion

125.	which of the following is the correct order of gradually decreasing basic nature of the oxides?A. `Al_(2)O_(3),MgO,Cl_(2)O_(7),SO_(3)`B. `MgO,Al_(2)O_(3),SO_(3),Cl_(2)O_(7)`C. `Cl_(2)O_(7),SO_(3),Al2O_(3),MgO`D. `SO_(3),Cl_(2)O_(7),MgO,Al_(2)O_(3)`
Answer» Correct Answer - B Across the period non-metallic character increases. Hence basic nature of oxide decreases.

Discussion

126.	Cell wall is absent in:A. FunariaB. MycoplasmaC. NostocD. Aspergillus
Answer» Correct Answer - B Cell wall is absent in Mycoplasma.

Discussion

127.	Pick up the wrong statementA. Protista have photosynthetic and heterotrophic modes of nutritionB. Some fungi are edibleC. Nuclear membrane is present in MoneraD. Cell wall is absent in Animalia
Answer» Correct Answer - C Nuclear membrane is absent in Monera.

Discussion

128.	Pick up the wrong statementA. Protista have photosynthetic and heterotrophic modes of nutritionB. Some fungi are edibleC. Nuclear membrane is absent in MoneraD. Cell wall is present in Animalia
Answer» Correct Answer - D Cell wall is absent in animalia.

Discussion

129.	Prokaryotes used in making curd and antibiotics areA. CyanobacteriaB. ArchaebacteriaC. Chemosynthetic autotrophsD. Heterotrophic bacteria
Answer» Correct Answer - D Prokaryotes used in making curd and antibiotics are Heterotrophic bacteria.

Discussion

130.	Pick up the wrong statementA. Nuclear membrane is present in MoneraB. Cell wall is absent in AnimaliaC. Protista have photosynthetic and heterotrophic modes of nutritionD. Some fungi are edible
Answer» Correct Answer - A

Discussion

131.	The antibiotics have no effect on viruses becauseA. Viruses show metabolism of their ownB. Viruses are too small in size antibiotics to act upon themC. Viruses show on metabolism of their ownD. Viruses produce a thick covering and encyst themselves as endospores
Answer» Correct Answer - C

Discussion

132.	Name the element which is the poorest conductor of current among non-metals.
Answer» Correct Answer - `S` Sulphur `(S)`

Discussion

133.	Name of the heaviest naturally occurring element.
Answer» Correct Answer - `U` Uranium `(U)`

Discussion

134.	Which of the following is/are incorrect IUPAC name.A. 4-chloro-3-methyl cyclopentanol-1B. 1-amino-3-bromo hexan-1-oneC. 4-chloro-3-methyl cyclohexane carboxylic acidD. 3-bromo-1-methyl hexan-1-ol
Answer» Correct Answer - A::B::D

Discussion

135.	Which of the following is/are not the correct IUPAC name ?A. 2-Ethyl-3-methyl pentaneB. 4-Formyl pentane-2-olC. 3-Carbocy pentanoic acidD. Cyclohexaonic acid
Answer» Correct Answer - A::B::C::D

Discussion

136.	IUPAC name of `CH_(3)-CH_(2)-underset(H)underset(\|)N-CHO` is:A. N-ethyl aminoethanolB. N-formyl aminoethaneC. N-ethyl methanamideD. ethanaminal
Answer» Correct Answer - C

Discussion

137.	Which is correct :A. Slime moulds are haploidB. Protozoan lack cell wallC. Dinoflagellates are immotileD. Pellicle is absent in Euglena
Answer» Correct Answer - B

Discussion

138.	Callulose is the major component of cell wall ofA. PseudomonasB. SaccharomycesC. PythiumD. Xanthomonas
Answer» Correct Answer - C

Discussion

139.	Which of the following diseases is caused by a protozoanA. InfluenzaB. BabesiosisC. BlastomycosisD. Syphilis
Answer» Correct Answer - B Babesiosis diseases is caused by a protozoan.

Discussion

140.	Which the following are most suitable indicators of `SO_(2)` pollution in the enviromnent ?A. ConifersB. AlgaeC. FungiD. Lichens
Answer» Correct Answer - D Lichens are most suitable indicators of `SO_(2)` pollution in the environment.

Discussion

141.	Evaluate ∫ 1/(x log x[log(log x)] dx on (1, ∞).
Answer» t = log (log x) dt = (1/log x).(1/x) dx ∫ 1/(x log x [log (log x)] dx = ∫ dt/t = log \|t\| + C = log \|log (log x)\|+ C

141.

Evaluate ∫ 1/(x log x[log(log x)] dx on (1, ∞).

Answer»

t = log (log x)

dt = (1/log x).(1/x) dx

∫ 1/(x log x [log (log x)] dx

= ∫ dt/t = log |t| + C

= log |log (log x)|+ C

Discussion

142.	Solve ∫ (cot (log x)/x) dx, x ∈ I ⊂ (0, ∞) \ {enπ : n ∈ Z).
Answer» t = log x ⇒ dt = dx/x ∫ (cot (log x)/x) dx = ∫ cot t dt = log (sin t) + C = log (sin (log x)) + C

142.

Solve ∫ (cot (log x)/x) dx, x ∈ I ⊂ (0, ∞) \ {enπ : n ∈ Z).

Answer»

t = log x ⇒ dt = dx/x

∫ (cot (log x)/x) dx = ∫ cot t dt = log (sin t) + C

= log (sin (log x)) + C

Discussion

143.	Solve ∫ sec2 x cosec2 x dx on I ⊂ R [{nπ : n ∈ Z} ∪ {(2n + 1) (π/2) : n ∈ Z}]
Answer» ∫ sec² x.cosec² x dx = ∫ (1/(cos² x sin² x)) dx = ∫ (sin² x + cos² x/(cos² x.sin² x)) dx = ∫ (1/cos² x) dx + ∫ (1/sin² x) dx = ∫ sec² x dx + ∫ cosec² x dx = tan x – cot x + C

143.

Solve ∫ sec2 x cosec2 x dx on I ⊂ R [{nπ : n ∈ Z} ∪ {(2n + 1) (π/2) : n ∈ Z}]

Answer»

∫ sec² x.cosec² x dx

= ∫ (1/(cos² x sin² x)) dx

= ∫ (sin² x + cos² x/(cos² x.sin² x)) dx

= ∫ (1/cos² x) dx + ∫ (1/sin² x) dx

= ∫ sec² x dx + ∫ cosec² x dx

= tan x – cot x + C

Discussion

144.	Which of the following is the most electropositivite element?A. aluminiumB. MagnesiumC. phosphorusD. sulphur
Answer» Correct Answer - B Electropositive character decreases across the period as metallic character decreases.

Discussion

145.	Consider the following statements: (i) The radius of an atom is larger than that of the parent atom. (ii) The ionization enegry generally increase with increaseing atomic number in a period. (iii) The electronegativity of an element is the tendecy of an isolated atom to attract an electron. Which of the above statements is//are correct?A. `(i),(ii),(iii)`B. `(ii)`and(iii)`C. `(i)`and (ii)`D. `(i)` alone
Answer» Correct Answer - C The electronegativity of an element is the tendency of a bonded atom to attract the shared electron pair while the tendency of an isolated atom to attract an electron is electron gain enthalpy.

Discussion

146.	The first ionization enthalpy of an atom is the minimun enegry nedded to remove the highest enegry (that is the outermost) electron from the neutral atom in the________state in its ground state.A. solidB. liquidC. gaseousD. colloidal
Answer» Correct Answer - C Energy `+X(g) rarr X^(+)(g) +e^(-)` where `x` represents an atom of any element, `e^(-)` is an electron and `g` denotes the gaseous state. Unlike an atom in the condensed phase (liquid and soild), and atom in the gaseous phase of the element ois virtually uninfluenced by its neighbors. the magnitude of ionization enthalpy is a measure of teh effort required to force an atom to give up an electron, or of how tightly the electron is held in the atom. the higher the ionization enthalpy, the more difficult it is to remove the electron.

Discussion

147.	Assertion : The protistan cell body contains a well-defined nucleus and other membrane bound organelles. Reason : Protistans have eukaryotic organisation.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.
Answer» Correct Answer - A The protistan cell body contains a well-defined nucleus and other membrane bound organelles as protistan have eukaryotic organisation.

Discussion

148.	What is Camouflage ? Give its significance.
Answer» Some species of insects and frogs are cryptically coloured to avoid being defected easily by the predators. This phenomenon is called 'camouflage'.

Discussion

149.	What do you mean by parasitic Castration ? Give an example.
Answer» Some parasitic cause the degeneration of gonads of the host making it sterile. This effect is called parasitic castration. E.g: Saccli (root headed barnacle a crustation causes the degeneration of ovaries in the crab careinus maenas.

149.

What do you mean by parasitic Castration ? Give an example.

Answer»

Some parasitic cause the degeneration of gonads of the host making it sterile. This effect is called parasitic castration.

E.g: Saccli (root headed barnacle a crustation causes the degeneration of ovaries in the crab careinus maenas.

Discussion

150.	Why do mosquito bites itch?
Answer» When the mosquito bites, it injects a poisonous liquid into the human blood. This poison causes pain and itching and produces the swelling.

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following represents the correct order of increasing first ionisation enthalpy for `Ca,Ba,Se`, and `Ar`?A. `Ca lt S lt Ba lt Se lt Ar`B. `S lt Se lt Ca lt Ba lt Ar`C. `Ba lt Ca lt Se lt S lt Ar`D. `Ca lt Ba lt S lt Se lt Ar`

Which has the highest second ionisation potenitial?A. NitrogenB. carbonC. OxygenD. Fluorine

The element with highest value of ionisation potential isA. PotassiumB. HeliumC. HydrogenD. Xenon

In which of the following process highest energy is absorbed?A. `Cu rarr Cu^(+)`B. `Br rarr Br^(-)`C. `I rarr I^(-)`D. `Li rarr Li^(+)`

Which one of the following has the highest electronegativity?A. `Br`B. `Cl`C. `P`D. `Si`

Which is not the correct order of electronegativity?A. `ClgtSgtPgtSi`B. `SigtAlgtMggtNa`C. `FgtClgtBrgtI`D. None if these

In `C,N,O` and `F` the electronegativityA. Decrease from carbon to fluorineB. Increases from carbon to fluorineC. Increases from carbon to oxgen and then decreasesD. Decreases from carbon to oxygen and then increases

Which of the following has the least electron affinity in `kJ mol^(-1)`?A. OxygenB. carbonC. NitrogenD. Boron

Electron affinity is the lowest forA. NitrogenB. carbonC. OxygenD. sulphur

Electron affinity depends onA. Atomic sizeB. Nuclear chargeC. Atomic numberD. Atomic size and nuclear charge both

The electron affinity ofA. Carbon is greater than oxygenB. Sulphur is less than oxygenC. Iondine is greater than bromieD. Borimine is less than chlorine

Increasing order of electron affinity isA. `N lt O lt Cl lt Al`B. `O lt N lt Al lt Cl`C. `Al lt N lt O lt Cl`D. `Cl lt N lt O lt Al`

Wiht increasing atomic number in a certain periodA. the chemical reacity decreasesB. The chemical reactivity character increaseC. the electropositive character increasesD. the electronegative character increase

If the ionisation potential is `IP`, electron affinity is `EA` and electronegative is `X`, which of the following relation is correct?A. `2X-EA-IP=0`B. `2EA-X-IP=0`C. `2IP-X-EA=0`D. All of these

Which of the following has no unit?A. Electro negativityB. Electron affinityC. Ionisation energyD. Excitation potential

Which of the following does not apply to ascomycetesA. Mycelium is coenocytic and aseptateB. Commonly known as sac fungiC. Asexual spores called conidia are produced exogenouslyD. Sexual spores called ascospores are produced endogenously.

Which of the following does not apply to ascomycetesA. Mycelium is septate and branchedB. Commonly known as algal fungiC. Asexual spores called conidia are produced exogenouslyD. Sexual spores called ascospores are produced endogenously.

The deuteromycetous fungi member were often moved to ascomycetes and basidiomycetes after the identification ofA. Sexual phaseB. Vegetative phaseC. Asexual phaseD. None of the above

In Riccia / Marchantia the rhizoids areA. Unicellular and branchedB. Multicellular and branchedC. Multicellular and unbranchedD. Unicellular and unbranched

How many `s`-block elements are known ?

Which block of elements consists of metals, non metals and metalloids ?

Which block of elements consists of metals, non metals and metalloids ?A. `f`-blockB. `s`-blockC. `d`-blockD. `p`-block

which of the following is the correct order of gradually decreasing basic nature of the oxides?A. `Al_(2)O_(3),MgO,Cl_(2)O_(7),SO_(3)`B. `MgO,Al_(2)O_(3),SO_(3),Cl_(2)O_(7)`C. `Cl_(2)O_(7),SO_(3),Al2O_(3),MgO`D. `SO_(3),Cl_(2)O_(7),MgO,Al_(2)O_(3)`

Cell wall is absent in:A. FunariaB. MycoplasmaC. NostocD. Aspergillus

Pick up the wrong statementA. Protista have photosynthetic and heterotrophic modes of nutritionB. Some fungi are edibleC. Nuclear membrane is present in MoneraD. Cell wall is absent in Animalia

Pick up the wrong statementA. Protista have photosynthetic and heterotrophic modes of nutritionB. Some fungi are edibleC. Nuclear membrane is absent in MoneraD. Cell wall is present in Animalia

Prokaryotes used in making curd and antibiotics areA. CyanobacteriaB. ArchaebacteriaC. Chemosynthetic autotrophsD. Heterotrophic bacteria

Pick up the wrong statementA. Nuclear membrane is present in MoneraB. Cell wall is absent in AnimaliaC. Protista have photosynthetic and heterotrophic modes of nutritionD. Some fungi are edible

The antibiotics have no effect on viruses becauseA. Viruses show metabolism of their ownB. Viruses are too small in size antibiotics to act upon themC. Viruses show on metabolism of their ownD. Viruses produce a thick covering and encyst themselves as endospores

Name the element which is the poorest conductor of current among non-metals.

Name of the heaviest naturally occurring element.

Which of the following is/are incorrect IUPAC name.A. 4-chloro-3-methyl cyclopentanol-1B. 1-amino-3-bromo hexan-1-oneC. 4-chloro-3-methyl cyclohexane carboxylic acidD. 3-bromo-1-methyl hexan-1-ol

Which of the following is/are not the correct IUPAC name ?A. 2-Ethyl-3-methyl pentaneB. 4-Formyl pentane-2-olC. 3-Carbocy pentanoic acidD. Cyclohexaonic acid

IUPAC name of `CH_(3)-CH_(2)-underset(H)underset(|)N-CHO` is:A. N-ethyl aminoethanolB. N-formyl aminoethaneC. N-ethyl methanamideD. ethanaminal

Which is correct :A. Slime moulds are haploidB. Protozoan lack cell wallC. Dinoflagellates are immotileD. Pellicle is absent in Euglena

Callulose is the major component of cell wall ofA. PseudomonasB. SaccharomycesC. PythiumD. Xanthomonas

Which of the following diseases is caused by a protozoanA. InfluenzaB. BabesiosisC. BlastomycosisD. Syphilis

Which the following are most suitable indicators of `SO_(2)` pollution in the enviromnent ?A. ConifersB. AlgaeC. FungiD. Lichens

Evaluate ∫ 1/(x log x[log(log x)] dx on (1, ∞).

Solve ∫ (cot (log x)/x) dx, x ∈ I ⊂ (0, ∞) \ {enπ : n ∈ Z).

Solve ∫ sec2 x cosec2 x dx on I ⊂ R [{nπ : n ∈ Z} ∪ {(2n + 1) (π/2) : n ∈ Z}]

Which of the following is the most electropositivite element?A. aluminiumB. MagnesiumC. phosphorusD. sulphur

The first ionization enthalpy of an atom is the minimun enegry nedded to remove the highest enegry (that is the outermost) electron from the neutral atom in the________state in its ground state.A. solidB. liquidC. gaseousD. colloidal

What is Camouflage ? Give its significance.

What do you mean by parasitic Castration ? Give an example.

Why do mosquito bites itch?