52671 + Interview Questions in Chemistry in Class 11

1.	The general formula of an ester where R represents an alkyl group is:
Answer» ROH RCOOH RCOOR RH Answer :C

Discussion

2.	The general formula of alkynes is
Answer» `C_(N)H_(2N+2)` `C_(n)H_(2n)` `C_(n)H_(2n-2)` `C_(n)H_(2n-4)` ANSWER :C

Discussion

3.	The general formula of alkyne is ............. .
Answer» SOLUTION :`C_(N)H_(2n-2)`

Discussion

4.	The general formula of Alkene's is same as
Answer» CYCLO Alkenes Alka dienes Branched alkenes Cyclo Alkanes Solution :`C_nH_(2N)`

Discussion

5.	The general formula of alkenes is
Answer» `C_(n)H_(2N+2)` `C_(n)H_(2n)` `C_(n)H_(2n-2)` `C_(n)H_(2n-4)` ANSWER :B

Discussion

6.	The general formulafor cycloalkanes is ……………..
Answer» `C_(n)H_(n)` `C_(n)H_(2n)` `C_(n)H_(2n-2)` `C_(n)H_(2n+2)` ANSWER :B

Discussion

7.	The general formula for alkadiene is……………….. .
Answer» `C_n H_(2N)` `C_n H_(2n-n)` `C_n H_(2n-2)` `C_n H_(n-2)` SOLUTION :`C_n H_(2n-2)`

Discussion

8.	The general formula for alkadiene is ___
Answer» `C_(N)H_(2N)` `C_(n)H_(2n-1)` `C_(n)H_(2n-2)` `C_(n)H_(n-2)` ANSWER :B::C

Discussion

9.	The general formula for alkadiene is ............. .
Answer» `C_(N)H_(2N)` `C_(n)H_(2n-1)` `C_(n)H_(2n-2)` `C_(n)H_(n-2)` ANSWER :C

Discussion

10.	The general formula for alkadience is
Answer» `C_(N)H_(2N)` `C_(n)H_(2n-1)` `C_(n)H_(2n-2)` `C_(n)H_(n-2)` ANSWER :C

Discussion

11.	The general formula C_(n)H_(2n)O_(2) could be for open chain……
Answer» diketones carboxylic acids diols dialehydes Solution :`{:("STRUCTURE","M.F."),(CH_(3)COOH,C_(2)H_(4)O_(2)),(CH_(3)CH_(2)COOH,C_(3)H_(6)O_(2)),(CH_(3)CH_(2)CH_(2)COOH,C_(4)H_(8)O_(2)):}}C_(n)H_(2n)O_(2)`

Discussion

12.	The general formula C_(n)H_(2n)O_(2) could be for open chain
Answer» Diketones Carboxylic acids Diols Dialdehydes SOLUTION :Diketones - `C_n H_(2N - 2) O_2` , Carboxylic ACID - `C_n H_(2n) O_2 ` , Diols `- C_n H_(3N) O_2` , Dialdehydes ` - C_nH_nO_2`

Discussion

13.	The general features of the structure of a hydrogen atom and hydrogen like species were quantitatively explained by Niels Bohr: Calculate the radius of the second orbit of Li^(2+) (Express the answer in nm)
Answer» SOLUTION :`r_n=(0.0529xxn^2)/znmthereforeofLi^(2+)=(0.0529xx2^2)/3nm=0.0705nm`

Discussion

14.	The general electronic configuration of s-block elements is ………………… .
Answer» SOLUTION :`NS^(1-2)`

Discussion

15.	The general electronic configuration of s- block element is _____
Answer» `NS^(1)` `ns^(2)` `ns^(1)andns^(2)` `ns^(1-2)` ANSWER :d

Discussion

16.	The general electronic configuration of p- block element is _________
Answer» `NS^(1-2)` `NP^(1-6)` `np^(6)` `ns^(2)np^(6)` ANSWER :d

Discussion

17.	The general electronic configuration of outer most and penultimate shell is given as (n - 1)s^(2)(n-1)p^(6)(n-1)d^(x)ns^(2). Then for an element with n=4 und x = 7.
Answer» 25 26 27 28 Answer :C

Discussion

18.	The general electronic configuration of f-block elements is
Answer» `ns^2 np^6 (N -1) d^(0-1) (n - 2) F^(1-14)` `ns^2 (n-1)d^(0,1) (n-2)f^(1-14)` `ns^2 nd^(0,1) nf^(1-14)` `ns^2 (n-1)d^(0,1) (n-1) f^(1-14)` ANSWER :B

Discussion

19.	The general electronic configuration of elements of carbon family
Answer» `ns^2 np^4` `ns^2 np^3` `ns^2 np^1` `ns^2 np^2` ANSWER :D

Discussion

20.	The general electronic configuration of d-block elements is
Answer» `ns^(1-2)(n-1)d^(1-10)` `ns^(2)(n-1)d^(1)(n-2)f^(1-14)` `ns^(1-2)(n-1)d^(1-9)` `ns^(1-2)np^(6)(n-1)d^(1-10)` ANSWER :A

Discussion

21.	The general electronic configuration of all the elements of p-block .
Answer» `ns^2 NP^1` `ns^2 np^6` `ns^2 np^(1-6)` `ns^2 np^(1-5)` ANSWER :C

Discussion

22.	The general electronic configuration of d- block element is _________
Answer» `NS^(2)NP^(6)` `(n-1)d^(1-10)ns^(0-2)` `(n-1)d^(1)ns^(0-2)` `(n-1)d^(0-10)ns^(2)` Answer :b

Discussion

23.	The general electronic configuration of alkali metals is ________
Answer» SOLUTION :(NOBLE GAS) NS.

Discussion

24.	The general electronic configuration (n - 1)d^3ns^2? indicates that the particular element belong to the group
Answer» VB VA IVB IIB Answer :A

Discussion

25.	The gases which obey Gas Laws at all temperatures and pressures are called ideal gases. Give reasons for the deviation of real gases from the ideal gas behaviour
Answer» Solution :According to boyle.s LAW `P_1V_1= P_2 V_2` There, pressure required, `P_2 = (P_1V_1)/V_2 = (500xx1)/300` = 5/3 ATM

Discussion

26.	The gases which are responsible for photochemical smog are :
Answer» oxides of NITROGEN hydrocarbons CARBON monoxide INERT gases Answer :A::B::C

Discussion

27.	The gases which are absorbers of IR radiation
Answer» oxygen nitrogen CARBON DIOXIDE chlorofluorocarbons Answer :C::D

Discussion

28.	The gases produced when 18 g carbon reacts with 5 "litre" of oxygen at 18^(circ)C and 5 atm pressure are treated with 0.5 "litre" of 2M NaOH. Calculate the concentration of sodium carbonate and sodium bicarbonate produced by the reaction of CO_(2) with NaOH. CO has no reaction under these conditions.
Answer» Answer :`Na_(2)CO_(3)=0.816M, NaHCO_(3)=0.368 M`;

Discussion

29.	The gases produced in the reaction, Pb(NO_(3))_(2)overset(Delta)toandNH_(4)NO_(3)overset(Delta)to are respectively
Answer» `N_(2)O,NO` `N_(2)O,NO_(2)` `NO,NO_(2)` `NO_(2),N_(2)O` Solution :`2Pb(NO_(3))_(2)overset(DELTA)to2PbO+4BO_(2)+O_(2)` `NH_(4)NO_(3)overset(Delta)toN_(2)O+2H_(2)O`

Discussion

30.	The gases He and CO_(2) are very differnet in their behaviour at any temperature and pressure but their compressibility factors are nearly the same The law of corresponding states that the compressibility factor of any gas can be written as a universal function of the reduced variables .
Answer» SOLUTION :It is a FACT .

Discussion

31.	The Gaseous state is characterized by which following properties ?
Answer» Solution :Gases are HIGHLY compressible. Gases exert pressure equally in all directions. Gases have much lower density than the solids and liquids. the volume and the shape of gases are not fixed.These ASSUME volume and shape of the container. Gases mix EVENLY and COMPLETELY in all PROPORTIONS without any mechanical acid.

Discussion

32.	The gascous reaction A_((g)) + B_((g)) hArr 2C_((g)) + D_((g)) + qkJ is most favoured at :
Answer» HIGH TEMPERATURE and LOW pressure Low temperature and low pressure Low temperature and high pressure High temperature and high pressure Solution :Le-chatelier.s PRINCIPLE

Discussion

33.	The gaseous product formed when HOCl reacts with H_(2)O_(2) in acidic medium is
Answer» `H_(2)` `Cl_(2)` `O_(2)` `HClO_(2)` Solution :HOCL being an OXIDISING agent, oxidises `H_(2)O_(2)` to `O_(2)` and itself gets reduced to `Cl^(-)` ION. `HO-overset(+1)(Cl)+H_(2)overset(-1)(O_(2))to H_(3)O^(+)+ Cl^(-) + O_(2)`

Discussion

34.	The gaseous envelope around the earth is known as atmosphere. The region lying between an altitudesof 11.50 km is
Answer» Troposphere Mesosphere Thermosphere Stratosphere Answer :A

Discussion

35.	The gaseous envelope around the earth is known as atmosphere. The region lying between an altitude of 11-50 km is ............
Answer» Treposhere Mesophere Thermosphere STRATOSPHERE Solution :Stratosphere

Discussion

36.	The gaseous envelope around the earth is known as atmosphere. The lowest layer of this is extended upto 10 km from sea level, this layer is ........
Answer» Stratosphere Troposphere Mesosphere Hydrosphere Solution :Troposphere is the lowest REGION of the atmosphere. It extends UPTO the height of -10 km. from sea level. Troposphere is a turbulent, dusty zone containing AIR, much WATER VAPOUR and clouds. Note:The atmosphere is divided into four major regions : (i) Troposphere (ii) Stratosphere (iii) Mesosphere and (iv) Thermosphere.

Discussion

37.	The gaseous envelope around the earth is known as atmosphere. The lowest layer of this is extended upto 10 km from sea level. This layer is _______
Answer» Stratosphere TROPOSPHERE Mesosphere Hydrosphere Solution :The lowest LAYER of the atmosphere UPTO 10-11 KM is called troposphere

Discussion

38.	The gas which reacts with haemoglobin in blood is :
Answer» CO `SO_(2)` `CO_(2)` NO Answer :A

Discussion

39.	The gas which leaked in the Bhopal gas tragedy was __________
Answer» ANSWER :METHYL ISOCYANATE(MIC)

Discussion

40.	The gas which is twice as dense as oxygen under the same conditions is
Answer» Ozone Sulphur trioxide Sulphur dioxide Carbon dioxide Answer :C

Discussion

41.	The gas which is easy to liquefy is
Answer» `H_2` `He` `CO_2` `NH_3` ANSWER :D

Discussion

42.	The gas which can not be liquified is
Answer» `H_2` `He` `AR` IDEAL GAS ANSWER :B

Discussion

43.	The gas which can be liquefied under high pressure at 4^(@)C is
Answer» nitrogen hydrogen Oxygen Ammonia Solution :Same EXPLANATION as in Q.102

Discussion

44.	The gas that liquefies first, when cooled from 500 K to its critical temperature given in parenthesis is "____________".
Answer» `NH_(3) ( 405.5K)` `CO_(2) ( 304.1K ) ` `N_(2) ( 126.0 K ) ` `O_(2) ( 154.3K)` Answer :A

Discussion

45.	The gas that liquefies first, when cooled from 500K to its critical temperature given in parenthesis is
Answer» `O_2( 154.3 K)` `NH_3 (405.5K)` `CO_2 ( 304.1 K)` `N_2 (126.0K)` ANSWER :B

Discussion

46.	The gas that is heated up during Joule Thomson effect at ordinary temperture is
Answer» `O_2` `CO_2` `H_2` `SO_2` ANSWER :C

Discussion

47.	The gas that has relatively stronger intermolecular forces
Answer» `H_2` `O_2` `CH_4` `NH_3` ANSWER :D

Discussion

48.	The gas that is heated up during Joule Thomson effect at ordinary temperature is
Answer» `O_(2)` `CO_(2)` `H_(2)` `SO_(2)` SOLUTION :`H_(2)` and `He` show heating EFFECT because they have LOW inversion temperature

Discussion

49.	The gas synthesised by coal gasification is
Answer» WATER GAS Producergas COAL gas Semiwater gas Answer :A

Discussion

50.	The gas released in Bhopal gas tragedy was
Answer» AMMONIA METHYL cyanide Methyl isocyanide Methyl isocyanate Answer :D

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The general formula of an ester where R represents an alkyl group is:

The general formula of alkynes is

The general formula of alkyne is ............. .

The general formula of Alkene's is same as

The general formula of alkenes is

The general formulafor cycloalkanes is ……………..

The general formula for alkadiene is……………….. .

The general formula for alkadiene is ___

The general formula for alkadiene is ............. .

The general formula for alkadience is

The general formula C_(n)H_(2n)O_(2) could be for open chain……

The general formula C_(n)H_(2n)O_(2) could be for open chain

The general features of the structure of a hydrogen atom and hydrogen like species were quantitatively explained by Niels Bohr: Calculate the radius of the second orbit of Li^(2+) (Express the answer in nm)

The general electronic configuration of s-block elements is ………………… .

The general electronic configuration of s- block element is _____

The general electronic configuration of p- block element is _________

The general electronic configuration of outer most and penultimate shell is given as (n - 1)s^(2)(n-1)p^(6)(n-1)d^(x)ns^(2). Then for an element with n=4 und x = 7.

The general electronic configuration of f-block elements is

The general electronic configuration of elements of carbon family

The general electronic configuration of d-block elements is

The general electronic configuration of all the elements of p-block .

The general electronic configuration of d- block element is _________

The general electronic configuration of alkali metals is ________

The general electronic configuration (n - 1)d^3ns^2? indicates that the particular element belong to the group

The gases which obey Gas Laws at all temperatures and pressures are called ideal gases. Give reasons for the deviation of real gases from the ideal gas behaviour

The gases which are responsible for photochemical smog are :

The gases which are absorbers of IR radiation

The gases produced in the reaction, Pb(NO_(3))_(2)overset(Delta)toandNH_(4)NO_(3)overset(Delta)to are respectively

The gases He and CO_(2) are very differnet in their behaviour at any temperature and pressure but their compressibility factors are nearly the same The law of corresponding states that the compressibility factor of any gas can be written as a universal function of the reduced variables .

The Gaseous state is characterized by which following properties ?

The gascous reaction A_((g)) + B_((g)) hArr 2C_((g)) + D_((g)) + qkJ is most favoured at :

The gaseous product formed when HOCl reacts with H_(2)O_(2) in acidic medium is

The gaseous envelope around the earth is known as atmosphere. The region lying between an altitudesof 11.50 km is

The gaseous envelope around the earth is known as atmosphere. The region lying between an altitude of 11-50 km is ............

The gaseous envelope around the earth is known as atmosphere. The lowest layer of this is extended upto 10 km from sea level, this layer is ........

The gaseous envelope around the earth is known as atmosphere. The lowest layer of this is extended upto 10 km from sea level. This layer is _______

The gas which reacts with haemoglobin in blood is :

The gas which leaked in the Bhopal gas tragedy was __________

The gas which is twice as dense as oxygen under the same conditions is

The gas which is easy to liquefy is

The gas which can not be liquified is

The gas which can be liquefied under high pressure at 4^(@)C is

The gas that liquefies first, when cooled from 500 K to its critical temperature given in parenthesis is "____________".

The gas that liquefies first, when cooled from 500K to its critical temperature given in parenthesis is

The gas that is heated up during Joule Thomson effect at ordinary temperture is

The gas that has relatively stronger intermolecular forces

The gas that is heated up during Joule Thomson effect at ordinary temperature is

The gas synthesised by coal gasification is

The gas released in Bhopal gas tragedy was