2600 + Interview Questions in Chemistry Page 48 InterviewSolution

2351.	Which of the given sets of temperature and pressure will cause a gas to exhibit the greatest deviation from ideal gas behavior
Answer» Which of the given sets of temperature and pressure will cause a gas to exhibit the greatest deviation from ideal gas behavior

Discussion

2352.	The KPKC ratio will be highest in case of
Answer» The $\frac{K_{P}}{K_{C}}$ ratio will be highest in case of

Discussion

2353.	Which fluorescent material was used in Thomson’s cathode ray experiment?
Answer» Which fluorescent material was used in Thomson’s cathode ray experiment?

Discussion

2354.	In the atomic volume vs atomic weight of the elements graph, which of the following element occupies the peak position on the curve?
Answer» In the atomic volume vs atomic weight of the elements graph, which of the following element occupies the peak position on the curve?

Discussion

2355.	Which gas is strongly adsorbed by charcoal -
Answer» Which gas is strongly adsorbed by charcoal -

Discussion

2356.	The tenth element in the periodic table is part of the
Answer» The tenth element in the periodic table is part of the

2356.

The tenth element in the periodic table is part of the

Answer»

The tenth element in the periodic table is part of the

Discussion

2357.	In which of the following compounds, observed bond angle is found to be greater than expected, but not due to back bonding.
Answer» In which of the following compounds, observed bond angle is found to be greater than expected, but not due to back bonding.

Discussion

2358.	When the total energy change in an isothermal cycle is zero, it represents
Answer» When the total energy change in an isothermal cycle is zero, it represents

Discussion

2359.	Schemes 1 and 2 describe the conversion of P to Q and R to S respectively. Scheme 3 describes the synthesis of T from Q and S. The total number of Br atoms in a molecule of T is:
Answer» Schemes 1 and 2 describe the conversion of P to Q and R to S respectively. Scheme 3 describes the synthesis of T from Q and S. The total number of Br atoms in a molecule of T is:

Discussion

2360.	The electronic configuration of four elements are given below.Which elements does not belong to same family as others?
Answer» The electronic configuration of four elements are given below. Which elements does not belong to same family as others?

2360.

The electronic configuration of four elements are given below.Which elements does not belong to same family as others?

Answer»

The electronic configuration of four elements are given below.

Which elements does not belong to same family as others?

Discussion

2361.	In the given reaction:
Answer» In the given reaction:

Discussion

2362.	In acidic medium (Conc. H2SO4),Hydrogen peroxide reacts with K2Cr2O7 in the presence of ether forms a deep violet coloured chromium peroxide. The Oxidation state of chromium in chromium pentoxide is
Answer» In acidic medium (Conc. H₂SO₄),Hydrogen peroxide reacts with K₂Cr₂O₇ in the presence of ether forms a deep violet coloured chromium peroxide. The Oxidation state of chromium in chromium pentoxide is

Discussion

2363.	The correct order of +I strength for the following groups −CH3,−CH2R,−CD3 is :(Here R is any alkyl group ).
Answer» The correct order of $+ I$ strength for the following groups $- C H_{3}, - C H_{2} R, - C D_{3}$ is : (Here $R$ is any alkyl group ).

Discussion

2364.	Which one of the following has the maximum number of unpaired electrons ?
Answer» Which one of the following has the maximum number of unpaired electrons ?

Discussion

2365.	The ether that undergoes electrophilic substitution reactions is:
Answer» The ether that undergoes electrophilic substitution reactions is:

Discussion

2366.	Cresol is
Answer» Cresol is

Discussion

2367.	Crystal field stabilization energy for high spin d4 octahedral complex is:
Answer» Crystal field stabilization energy for high spin $d^{4}$ octahedral complex is:

Discussion

2368.	If the valence shell electronic structure for an element is ns2np5, this element will belong to the group of
Answer» If the valence shell electronic structure for an element is $n s^{2} n p^{5}$ , this element will belong to the group of

Discussion

2369.	Which of the following reaction results in photochemical smog?
Answer» Which of the following reaction results in photochemical smog?

Discussion

2370.	The electronic configurations of Eu (Atomic No. 63), Gd (Atomic No. 64) and Tb (Atomic No. 65) are
Answer» The electronic configurations of Eu (Atomic No. 63), Gd (Atomic No. 64) and Tb (Atomic No. 65) are

Discussion

2371.	Predict the order of electron density for the following compounds :
Answer» Predict the order of electron density for the following compounds :

Discussion

2372.	Calculate the number of photons emitted by 100 W yellow lamp in 1 s. If the wavelength of yellow light is 560 nm and assuming 100% efficiency.
Answer» Calculate the number of photons emitted by $100 W$ yellow lamp in $1 s$ . If the wavelength of yellow light is $560 nm$ and assuming $100 %$ efficiency.

Discussion

2373.	Identify the correct statement about H2O2
Answer» Identify the correct statement about $H_{2} O_{2}$

Discussion

2374.	[Cu(NH3)4]2+ shows the following hybridization
Answer» $[C u (N H_{3})_{4}]^{2 +}$ shows the following hybridization

Discussion

2375.	Assume general laboratory reagents are available.Which of the following sequences could synthesize the following compound from the indicated starting material:
Answer» Assume general laboratory reagents are available. Which of the following sequences could synthesize the following compound from the indicated starting material:

Discussion

2376.	On the top of a certain mountain where atmospheric pressure is 535 mm Hg, pure water shows a boiling point of 360 K and it takes 3×102 min to boil at the top of the mountain as against 3 min taken to boil an egg at 370 K. The ratio of rate constants K370K360 is ?
Answer» On the top of a certain mountain where atmospheric pressure is 535 mm Hg, pure water shows a boiling point of 360 K and it takes $3 \times 10^{2}$ min to boil at the top of the mountain as against 3 min taken to boil an egg at 370 K. The ratio of rate constants $\frac{K_{370}}{K_{360}}$ is ?

Discussion

2377.	An element is represented by ZXA, where Z is atomic number which is also equal to number of proton, A is mass number and X is symbol of the element.Mass number (A) = Number of protons (Z) + Number of neutrons.Isoelectronic: Species/ elements having same number of electronIsodiaphers: Elements having same value of \|(A−2Z)\|Isotopes: Atoms having same number of protonWhich of the following is a pair of isodiaphers?
Answer» An element is represented by $_{Z} X^{A}$ , where Z is atomic number which is also equal to number of proton, A is mass number and X is symbol of the element. Mass number (A) = Number of protons (Z) + Number of neutrons. Isoelectronic: Species/ elements having same number of electron Isodiaphers: Elements having same value of $\| (A - 2 Z) \|$ Isotopes: Atoms having same number of proton Which of the following is a pair of isodiaphers?

Discussion

2378.	Oxygen molecule is paramagnetic because it has
Answer» Oxygen molecule is paramagnetic because it has

Discussion

2379.	In the cyclic process shown in P-V diagram, the magnitude of the work done is
Answer» In the cyclic process shown in P-V diagram, the magnitude of the work done is

Discussion

2380.	But - 1 - ene is selectively formed by the action of Alcoholic - KOH on
Answer» But - 1 - ene is selectively formed by the action of Alcoholic - KOH on

Discussion

2381.	The magnetic moment of 'autocatalyst' formed in the reaction between acidified oxalic acid and potassium permanganate is
Answer» The magnetic moment of 'autocatalyst' formed in the reaction between acidified oxalic acid and potassium permanganate is

Discussion

2382.	CH3CHO and C6H5CH2CHO can be distinguished by:
Answer» $C H_{3} C H O$ and $C_{6} H_{5} C H_{2} C H O$ can be distinguished by:

Discussion

2383.	If 0.15g of a solute dissolved in 15g of solvent is boiled at a temperature higher by 0.2160C than that of the pure solvent, then the molecular weight of thesubstance is (molal elevation constant for the solvent is 2.16):
Answer» If 0.15g of a solute dissolved in 15g of solvent is boiled at a temperature higher by 0.216⁰C than that of the pure solvent, then the molecular weight of the substance is (molal elevation constant for the solvent is 2.16):

2383.

If 0.15g of a solute dissolved in 15g of solvent is boiled at a temperature higher by 0.2160C than that of the pure solvent, then the molecular weight of thesubstance is (molal elevation constant for the solvent is 2.16):

Answer»

If 0.15g of a solute dissolved in 15g of solvent is boiled at a temperature higher by 0.216⁰C than that of the pure solvent, then the molecular weight of the

substance is (molal elevation constant for the solvent is 2.16):

Discussion

2384.	Which one of the following is an incorrectstatement for physisorption
Answer» Which one of the following is an incorrect statement for physisorption

Discussion

2385.	Which of the following molecules follows octet rule?
Answer» Which of the following molecules follows octet rule?

Discussion

2386.	In which of the properties listed below, hydrogen does not show similarity with halogens? I. Nature of the oxide II. Electropositive character III. Combination with alkali metals IV. Atomicity
Answer» In which of the properties listed below, hydrogen does not show similarity with halogens? $I .$ Nature of the oxide $I I .$ Electropositive character $I I I .$ Combination with alkali metals $I V .$ Atomicity

Discussion

2387.	Match the reactions with the reagents to be used for the corresponding conversions.
Answer» Match the reactions with the reagents to be used for the corresponding conversions.

Discussion

2388.	How many chiral carbons are present in 2,3,4-trichloropentane?
Answer» How many chiral carbons are present in 2,3,4-trichloropentane?

Discussion

2389.	An Electromagnetic radiation of wavelength 242 nm is just sufficient to ionize a sodium atom. Calculate the ionization energy of sodium in kJ mol−1.
Answer» An Electromagnetic radiation of wavelength 242 nm is just sufficient to ionize a sodium atom. Calculate the ionization energy of sodium in kJ ${m o l}^{- 1}$ .

Discussion

2390.	A bulb emits light of λ=4500 oA. The bulb is rated as 150 watt and 8% of the energy is emitted as light. How many photons are emitted by the bulb per second?
Answer» A bulb emits light of $λ = 4500 o A$ . The bulb is rated as 150 watt and 8% of the energy is emitted as light. How many photons are emitted by the bulb per second?

Discussion

2391.	E∘(SRP) of different half cells are given:-E∘Cu2+/Cu=0.34 volt;E∘Zn2+/Zn=−0.76 voltE∘Ag+/Ag=0.8 volt;E∘Mg2+/Mg=−2.37 voltWhich of the following has the most negative ΔG∘ value?
Answer» $E^{\circ} (S R P)$ of different half cells are given:- $E_{C u^{2 +} / C u}^{\circ} = 0.34 v o l t; E_{Z n^{2 +} / Z n}^{\circ} = - 0.76 v o l t$ $E_{A g^{+} / A g}^{\circ} = 0.8 v o l t; E_{M g^{2 +} / M g}^{\circ} = - 2.37 v o l t$ Which of the following has the most negative $Δ G^{\circ}$ value?

Discussion

2392.	Which of the following is the most basic oxide?
Answer» Which of the following is the most basic oxide?

Discussion

2393.	The relation between Vant Hoff factor (1) and the degree of dissociation ( α ) for a weak electrolite given by formula AxBy is:
Answer» The relation between Vant Hoff factor (1) and the degree of dissociation ( $α$ ) for a weak electrolite given by formula AxBy is:

Discussion

2394.	When electromagnetic radiation of wavelength 396 ∘A is incident on a metal sheet that has a work function of 15.6 eV, find the maximum kinetic energy of the photoelectrons emitted.Take h=6.6×10−34 Js
Answer» When electromagnetic radiation of wavelength $396 \circ A$ is incident on a metal sheet that has a work function of 15.6 eV, find the maximum kinetic energy of the photoelectrons emitted. Take $h = 6.6 \times 10^{- 34} J s$

Discussion

2395.	Which of the following has the electronic configuration [Kr]5s2?
Answer» Which of the following has the electronic configuration $[K r] 5 s^{2}$ ?

Discussion

2396.	The molal elevation constant is the ratio of the elevation of boiling point to
Answer» The molal elevation constant is the ratio of the elevation of boiling point to

Discussion

2397.	If 2.4088×1026 electrons are there in a pure sample of H2SO4, then what is the mass of oxygen present?
Answer» If $2.4088 \times 10^{26}$ electrons are there in a pure sample of $H_{2} S O_{4}$ , then what is the mass of oxygen present?

Discussion

2398.	When n - hexane is heated with Mo2O3 at 5000C and 20 atmospheres, the following changes takes placeA. Hybridisation of carbon changes B.No of C - C bonds increasesC. No of C - H bonds decreases D. Percentage of carbon increases
Answer» When n - hexane is heated with $M o_{2} O_{3}$ at $500^{0} C$ and 20 atmospheres, the following changes takes place A. Hybridisation of carbon changes B.No of C - C bonds increases C. No of C - H bonds decreases D. Percentage of carbon increases

2398.

When n - hexane is heated with Mo2O3 at 5000C and 20 atmospheres, the following changes takes placeA. Hybridisation of carbon changes B.No of C - C bonds increasesC. No of C - H bonds decreases D. Percentage of carbon increases

Answer»

When n - hexane is heated with $M o_{2} O_{3}$ at $500^{0} C$ and 20 atmospheres, the following changes takes place

A. Hybridisation of carbon changes B.No of C - C bonds increases

C. No of C - H bonds decreases D. Percentage of carbon increases

Discussion

2399.	In which pair of ions both the species contain S - S bond?
Answer» In which pair of ions both the species contain S - S bond?

Discussion

2400.	Read the following and select one the correct answer.Statement I: In water, orthoboric acid behaves as a weak monobasic acidStatement II: In water, orthoboric acid acts as a proton donor
Answer» Read the following and select one the correct answer. Statement I: In water, orthoboric acid behaves as a weak monobasic acid Statement II: In water, orthoboric acid acts as a proton donor

2400.

Read the following and select one the correct answer.Statement I: In water, orthoboric acid behaves as a weak monobasic acidStatement II: In water, orthoboric acid acts as a proton donor

Answer»

Read the following and select one the correct answer.

Statement I: In water, orthoboric acid behaves as a weak monobasic acid

Statement II: In water, orthoboric acid acts as a proton donor

Discussion

Explore topic-wise InterviewSolutions in .

Which of the given sets of temperature and pressure will cause a gas to exhibit the greatest deviation from ideal gas behavior

The KPKC ratio will be highest in case of

Which fluorescent material was used in Thomson’s cathode ray experiment?

In the atomic volume vs atomic weight of the elements graph, which of the following element occupies the peak position on the curve?

Which gas is strongly adsorbed by charcoal -

The tenth element in the periodic table is part of the

In which of the following compounds, observed bond angle is found to be greater than expected, but not due to back bonding.

When the total energy change in an isothermal cycle is zero, it represents

Schemes 1 and 2 describe the conversion of P to Q and R to S respectively. Scheme 3 describes the synthesis of T from Q and S. The total number of Br atoms in a molecule of T is:

The electronic configuration of four elements are given below.Which elements does not belong to same family as others?

In the given reaction:

In acidic medium (Conc. H2SO4),Hydrogen peroxide reacts with K2Cr2O7 in the presence of ether forms a deep violet coloured chromium peroxide. The Oxidation state of chromium in chromium pentoxide is

The correct order of +I strength for the following groups −CH3,−CH2R,−CD3 is :(Here R is any alkyl group ).

Which one of the following has the maximum number of unpaired electrons ?

The ether that undergoes electrophilic substitution reactions is:

Cresol is

Crystal field stabilization energy for high spin d4 octahedral complex is:

If the valence shell electronic structure for an element is ns2np5, this element will belong to the group of

Which of the following reaction results in photochemical smog?

The electronic configurations of Eu (Atomic No. 63), Gd (Atomic No. 64) and Tb (Atomic No. 65) are

Predict the order of electron density for the following compounds :

Calculate the number of photons emitted by 100 W yellow lamp in 1 s. If the wavelength of yellow light is 560 nm and assuming 100% efficiency.

Identify the correct statement about H2O2

[Cu(NH3)4]2+ shows the following hybridization

Assume general laboratory reagents are available.Which of the following sequences could synthesize the following compound from the indicated starting material:

On the top of a certain mountain where atmospheric pressure is 535 mm Hg, pure water shows a boiling point of 360 K and it takes 3×102 min to boil at the top of the mountain as against 3 min taken to boil an egg at 370 K. The ratio of rate constants K370K360 is ?

Oxygen molecule is paramagnetic because it has

In the cyclic process shown in P-V diagram, the magnitude of the work done is

But - 1 - ene is selectively formed by the action of Alcoholic - KOH on

The magnetic moment of 'autocatalyst' formed in the reaction between acidified oxalic acid and potassium permanganate is

CH3CHO and C6H5CH2CHO can be distinguished by:

If 0.15g of a solute dissolved in 15g of solvent is boiled at a temperature higher by 0.2160C than that of the pure solvent, then the molecular weight of thesubstance is (molal elevation constant for the solvent is 2.16):

Which one of the following is an incorrectstatement for physisorption

Which of the following molecules follows octet rule?

In which of the properties listed below, hydrogen does not show similarity with halogens? I. Nature of the oxide II. Electropositive character III. Combination with alkali metals IV. Atomicity

Match the reactions with the reagents to be used for the corresponding conversions.

How many chiral carbons are present in 2,3,4-trichloropentane?

An Electromagnetic radiation of wavelength 242 nm is just sufficient to ionize a sodium atom. Calculate the ionization energy of sodium in kJ mol−1.

A bulb emits light of λ=4500 oA. The bulb is rated as 150 watt and 8% of the energy is emitted as light. How many photons are emitted by the bulb per second?

E∘(SRP) of different half cells are given:-E∘Cu2+/Cu=0.34 volt;E∘Zn2+/Zn=−0.76 voltE∘Ag+/Ag=0.8 volt;E∘Mg2+/Mg=−2.37 voltWhich of the following has the most negative ΔG∘ value?

Which of the following is the most basic oxide?

The relation between Vant Hoff factor (1) and the degree of dissociation ( α ) for a weak electrolite given by formula AxBy is:

When electromagnetic radiation of wavelength 396 ∘A is incident on a metal sheet that has a work function of 15.6 eV, find the maximum kinetic energy of the photoelectrons emitted.Take h=6.6×10−34 Js

Which of the following has the electronic configuration [Kr]5s2?

The molal elevation constant is the ratio of the elevation of boiling point to

If 2.4088×1026 electrons are there in a pure sample of H2SO4, then what is the mass of oxygen present?

When n - hexane is heated with Mo2O3 at 5000C and 20 atmospheres, the following changes takes placeA. Hybridisation of carbon changes B.No of C - C bonds increasesC. No of C - H bonds decreases D. Percentage of carbon increases

In which pair of ions both the species contain S - S bond?

Read the following and select one the correct answer.Statement I: In water, orthoboric acid behaves as a weak monobasic acidStatement II: In water, orthoboric acid acts as a proton donor