94420 + Interview Questions in Chemistry in Class 12

1.	Gamma rays are
Answer» HIGH ENERGY ELECTRONS High energy positrons Low energy electrons High energy ELECTROMAGNETIC waves Answer :D

Discussion

2.	Galvanized iron sheets and coated with
Answer» Nickel Chromium COPPER ZINC. Solution :G.I. SHEETS are COATED with zinc .

Discussion

3.	Give an example of a compound in which hydrogen bonding results in the formation of a dimer.
Answer» SOLUTION : CARBOXYLIC ACIDS or other EXAMPLE

Discussion

4.	Galvanization means:
Answer» DEPOSITION of ZN on Fe Deposition of AL on Fe Deposition of SN on Fe Deposition of CU on Fe Answer :A

Discussion

5.	Give an example of a Balz-Schiemann reaction.
Answer» SOLUTION :The THERMAL DECOMPOSITION of DIAZONIUM fluroborates to give fluroaarenes and `BF_(3)` is CALLED Balz-Schiemann reaction.

Discussion

6.	Galvanization includes plating iron with
Answer» zinc tin COPPER ALUMINIUM ANSWER :A

Discussion

7.	Galvanisation of iron sheets is done by
Answer» Copper Zine Silver Tin Answer :B

Discussion

8.	Give an example for water soluble vitamin.
Answer» Solution :Vitamin - B or Vitamin-C (ascorbic ACID) or any one of the below example Vitamin B1 (Thiamine), Vitamin B2 (RIBOFLAVIN), Vitamin B3 (Niacin), Vitamin B5 (pantothenic acid), Vitamin B6 (pyridoxine), vitamin B7 (biotin), vitamin b9 (folic or folate), vitamin b12 (Cyanocobalamins).

Discussion

9.	Galvanised iron sheets have coating of :
Answer» Cu Sn Zn Carbon Answer :C

Discussion

10.	Give an example for non narcotic analgesics.
Answer» SOLUTION :EXAMPLE: ASPIRIN and PARACETAMOL.

Discussion

11.	Galvanised iron sheets are coated with:C,Cu,Zn,Ni.
Answer» `C` `CU` `ZN` `NI` ANSWER :A

Discussion

12.	Give an example for pseudo first order reaction.
Answer» SOLUTION :INVERSION of cane sugarOR `C_(12)H_(22)O_(11) + H_2O overset(H^(+))to C_6 H_(12)O_6 + C_6H_(12)O_6`

Discussion

13.	Galvanised iron is rust proof due to the electroplating of iron with:
Answer» Zn Ni Cr Sn Answer :A

Discussion

14.	Give an example for the complexes possessing co-ordination number 8 and 7.
Answer» SOLUTION :(i) COMPLEX with co-ordination number 8-`Cu_2[ZrF_s].` (II) Complex with co-ordination number 7-`(NH_4)_3[ZrF_7].`

Discussion

15.	Galvanisation is applying a coating of
Answer» Cr Cu Zn Pb Solution :GALVANISATION is applying a COATING of zinc metal to PREVENT corrosion.

Discussion

16.	Give an example for pseudo first order reaction. Name the above reaction.
Answer» Solution :Acid HYDROLYSIS of METHYL acetate `CH_(3)COOCH_(3) + H_(2)O to CH_(3)COOH + CH_(3)OH`

Discussion

17.	Galvanisation is applying a coating of -
Answer» Zn Pb Cr Cu Answer :A

Discussion

18.	Give an example for ketohexose.
Answer» SOLUTION :FRUCTOSE

Discussion

19.	Galvanic cell is formed by attaching two electrodes by salt bridge in standard condtion. Then which of the following is anode electrode ?
Answer» Electrodes with HIGH `E_(cell)^(Theta)` VALUE. Electrodes with LESS `E_(cell)^(Theta)` value. Standard HYDROGEN electrode. None of above. Solution :Electrodes with less `E_(cell)^(Theta)` value.

Discussion

20.	Galvanic cellis a device in which
Answer» chemical energy is converted intoelectrical energy ELECTRICAL energy is convertedin to chemical energy chemical energy is seenin theformof HEAT thermal energy from an outside source is USED to derive the cell reaction Solution :GALVANIC cell is an electrochemical cell that CONVERTS the chemical energy of a spontaneous reaction into electrical energy

Discussion

21.	Galvanic cell converts _______ into______.
Answer» SOLUTION :CHEMICAL ENERGY,ELECTRICAL energy,

Discussion

22.	Give an example for (i) Non-narcotic analgesics(ii) Antiseptics.
Answer» SOLUTION :(i) Non-Narcotic - PARACETAMOL (II) ANTISEPTIC - DETTOL.

Discussion

23.	Galena overset("roasting") to etal oxide + gas oxidation state of 's' in galena - oxidation state of product
Answer» Solution :`2pbs_(("GALENA"))+3O_(2) to 2pbo+SO_(2)` Oxidation state of .s. in Galena is -2 Oxidation stateo of in producti=4 Difference in the oxidation states `=-4-(-2)=6`

Discussion

24.	Gallastone contains mainly
Answer» Calcium OXALATE Chloresterol Citric acid URIC acid SOLUTION :Gallactose are accumulation of cholesterol PARTICLES. Hence choice (B) is correct while (a),(c) and (d) are incorrect.

Discussion

25.	Give an example for homogenouscatalysis.
Answer» SOLUTION :`2SO_(2)(G)+O_(2)(g) OVERSET(NO(g)) to 2SO_(3)(g)`

Discussion

26.	Galena is an ore of :
Answer» LEAD GOLD Tin Mercury Answer :A

Discussion

27.	Give an example for fat soluble vitamin.
Answer» SOLUTION :VITAMIN A, D, E & K

Discussion

28.	Galena (an ore) is partially oxidized by passing air through it at high temperature. After some time, the passage of air is stopped, but the heating is continued in a closed furnance such that the contents undergo self-reduction, the weight (in kg)of Pb produced per kg of O_(2) consumend is _______ (Atomic weights in g mol^(=1):O=16,S=32,Pb=207
Answer» SOLUTION :(6.47) `PbS+O_(2) to PbSO_(2)` `(1000)/(32)MOL (1000)/(32) xx207 GM` mol of Pb= mol of`O_(2)` `=(10000)/(32)` mol `:.` MASS of Pb `=(1000)/(32)xx207g` `=(207)/(32)KG =6.47 `kg

Discussion

29.	Galena (an ore) is partially oxidized by passing air through it at high temperatureAfter some time, the passage of air is stopped, but the heating is continued in a closed furnance such that the contents undergo self-reduction.The weight (in kg) of Pb produced per kg of O_2 consumed is _____. Atomic weights in g mol^(-1)=O=16,S=32,Pb=207)
Answer» ANSWER :6.47

Discussion

30.	Galena (an ore ) is partially oxidised by passingare throughit at hightemperature. Aftersome time,the passageof air isstopped,but theheating is continued in a closed furance such thatthe contents undergoself - reduction. Theweight (in kg )of Pbproduced perkg of O_(2)consumed is- (O = 16, s = 32, Pb = 207)
Answer» SOLUTION :`PBS+ O_(2) to Pb + SO_(2)` mol of `O_(2)` = mol of Pb `(1000 (g))/(32) = ("Wt. of Pb (g)")/(207) 1 `

Discussion

31.	Give an example for biodegradable polymer.
Answer» SOLUTION :PHBV(OR) NYLON-2- nylon -6 OR any other EXAMPLE.

Discussion

32.	Galena is a sulphide of
Answer» Zn Cu Pb NONE of these SOLUTION :Galena = PBS

Discussion

33.	Give an example for amphoteric oxide.
Answer» SOLUTION :`Al_(2)O_(3)`

Discussion

34.	Galcanization is the
Answer» DEPOSITION of ZINC on Fe depositionof AL on Fe deposition of TIN on Fe deposition of Cu on Fe Answer :1

Discussion

35.	Give an example for adsorption process.
Answer» SOLUTION :SILICA gel adsorbs WATER molecules. Silica gel `rarr` ADSORBENT. Water molecules `rarr` Adsorbate.

Discussion

36.	Gadolinium belongs to 4f series.Itas atomicnumber is 64.Which of the followingis the correctelectronic configuration of gadolinium?
Answer» `[Xe]4f^(9)5s^(1)` `[Xe]4f^(7)5d^(1)6s^(2)` `[Xe]4f^(6) 5d^(2) 6s^(2)` `[Xe]4f^(8)6D^(2)` Solution :`GD( Z= 64)= [ Xe]^(54) 6s^(2) 4f^(7) 5d^(1)`

Discussion

37.	Gadoliniumbelongs to 4f series. Its atomic number is 64 . Which of the following is the correct electronic configuration of gadolinium ?
Answer» `[Xe]4F^(7) 5D^(1) 6s^(2)` `[Xe]4f^(6)5d^(2) 6s^(2)` `[Xe]4f^(8) 6s^(2)` `[Xe]4f^(9)5s^(1)` Solution :`. _(64) Gd= [Xe]^(54)4f^(7) 5d^(1) 6s^(2)` ( due to extra stability of half- filled4f SUBSHELL)

Discussion

38.	Give an example for a zero order reaction with suitable condition.
Answer» Solution :`2HI UNDERSET(DELTA)overset(Au)RARR H_(2) + I_(2)` `2NH_(3) underset(("or")W)overset(Mo)rarr N_(2) + 3H_(2)`

Discussion

39.	Give an example for a neutral complex.
Answer» SOLUTION :NICKEL tetracarbonyl, `K_4 [FE(CN)_6]`.

Discussion

40.	Gadolinium belongs to 4f series. It's atomic number is 64. Which of the following is the correct electronic configurationof gadolinium ?
Answer» `[XE]4F^7 5d^1 6s^2` `[Xe]4f^6 5d^2 6s^2` `[Xe]4f^8 6d^2` `[Xe]4f^9 5s^1` Solution :`""_(64)Gd : [Xe]^(54) 4f^7 5d^1 6s^2 ` (DUE to GREATER stability of half- filled 4f subshell).

Discussion

41.	Give an example for a polyster fibre.
Answer» ANSWER :TERYLENE (DACRON)

Discussion

42.	Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium
Answer» `[Xe]4F^(9)5s^(1)` `[Xe]4f^(7)5d^(1)6s^(2)` `[Xe]4f^(3)5d^(5)6s^(2)` `[Xe]4f^8 6d^2` ANSWER :B

Discussion

43.	Give an example for a reaction catalysed by nano particles.
Answer» SOLUTION :

Discussion

44.	Give an examplefor a disaccharide that contains fructoseunitsin furanosefrom .
Answer» Solution :SUCROSE `(C_(12)H_(22)O_(11))`.

Discussion

45.	Gadolinium belongs to 4f series. It's atomic number is 64. Which of the following is the correct electronic configuration of gadollinium?
Answer» `[Xe] 4f^(7) 5d^(1) 6s^(2)` `[Xe] 4f^(6) 5d^(2) 6s^(2)` `[Xe] 4f^(8) 6d^(2)` `[Xe] 4f^(9) 5S^(1)` Answer :A

Discussion

46.	Give an example for an ionic complex.
Answer» SOLUTION :Ferrocyanide ion, `[FE(CN)_6]^(4-)`.

Discussion

47.	Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium ?
Answer» [Xe] `4F^(7) 5d^(1) 6s^(2)` [Xe] `4f^(6) 5d^(2) 6s^(2)` [Xe] `4f^(8) 6d^(2)` [Xe] `4f^(9) 5s^(1)` Solution :Gd : `[Xe]^(54) 4f^(7) 6s^(2)` because of extra stability of half filled f-subshell.

Discussion

48.	Give an example for a co-polymer.
Answer» SOLUTION :The ADDITION polymers that are formed by TWO different monomeric SPECIES are called copolymers.

Discussion

49.	Give an example for a cationic complex.
Answer» SOLUTION :Tetrammine COPPER (II) sulphate `[Cu(NH_3)_4] SO_4`.

Discussion

50.	Gabriels phthalimide reaction is used to prepare :
Answer» p-amine s-amine t-amine All Answer :A

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Gamma rays are

Galvanized iron sheets and coated with

Give an example of a compound in which hydrogen bonding results in the formation of a dimer.

Galvanization means:

Give an example of a Balz-Schiemann reaction.

Galvanization includes plating iron with

Galvanisation of iron sheets is done by

Give an example for water soluble vitamin.

Galvanised iron sheets have coating of :

Give an example for non narcotic analgesics.

Galvanised iron sheets are coated with:C,Cu,Zn,Ni.

Give an example for pseudo first order reaction.

Galvanised iron is rust proof due to the electroplating of iron with:

Give an example for the complexes possessing co-ordination number 8 and 7.

Galvanisation is applying a coating of

Give an example for pseudo first order reaction. Name the above reaction.

Galvanisation is applying a coating of -

Give an example for ketohexose.

Galvanic cell is formed by attaching two electrodes by salt bridge in standard condtion. Then which of the following is anode electrode ?

Galvanic cellis a device in which

Galvanic cell converts _______ into______.

Give an example for (i) Non-narcotic analgesics(ii) Antiseptics.

Galena overset("roasting") to etal oxide + gas oxidation state of 's' in galena - oxidation state of product

Gallastone contains mainly

Give an example for homogenouscatalysis.

Galena is an ore of :

Give an example for fat soluble vitamin.

Give an example for biodegradable polymer.

Galena is a sulphide of

Give an example for amphoteric oxide.

Galcanization is the

Give an example for adsorption process.

Gadolinium belongs to 4f series.Itas atomicnumber is 64.Which of the followingis the correctelectronic configuration of gadolinium?

Gadoliniumbelongs to 4f series. Its atomic number is 64 . Which of the following is the correct electronic configuration of gadolinium ?

Give an example for a zero order reaction with suitable condition.

Give an example for a neutral complex.

Gadolinium belongs to 4f series. It's atomic number is 64. Which of the following is the correct electronic configurationof gadolinium ?

Give an example for a polyster fibre.

Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium

Give an example for a reaction catalysed by nano particles.

Give an examplefor a disaccharide that contains fructoseunitsin furanosefrom .

Gadolinium belongs to 4f series. It's atomic number is 64. Which of the following is the correct electronic configuration of gadollinium?

Give an example for an ionic complex.

Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium ?

Give an example for a co-polymer.

Give an example for a cationic complex.

Gabriels phthalimide reaction is used to prepare :

Galvanic cell converts _ into.