46295 + Interview Questions in Chemistry

1.	For the elementary reaction M⟶N, the rate of disappearance of M increases by a factor of 8 upon doubling the concentration of M. The order of the reaction with respect to M is
Answer» For the elementary reaction $M ⟶ N$ , the rate of disappearance of M increases by a factor of 8 upon doubling the concentration of M. The order of the reaction with respect to M is

Discussion

2.	Why can't a isothermal process occur in a isolated system
Answer» Why can't a isothermal process occur in a isolated system

Discussion

3.	In which of the following complexes is the effective atomic number not equal to the atomic number of an inert gas?
Answer» In which of the following complexes is the effective atomic number not equal to the atomic number of an inert gas?

Discussion

4.	In which pair of compounds the oxidation state of nitrogen is -1? a)ammonia ,hydroxylamine b)nitric oxide and nitric acid c)hydrazine and ammonia d)hydrazine and hydroxylamine
Answer» In which pair of compounds the oxidation state of nitrogen is -1? a)ammonia ,hydroxylamine b)nitric oxide and nitric acid c)hydrazine and ammonia d)hydrazine and hydroxylamine

4.

In which pair of compounds the oxidation state of nitrogen is -1? a)ammonia ,hydroxylamine b)nitric oxide and nitric acid c)hydrazine and ammonia d)hydrazine and hydroxylamine

Answer»

In which pair of compounds the oxidation state of nitrogen is -1?

a)ammonia ,hydroxylamine

b)nitric oxide and nitric acid

c)hydrazine and ammonia

d)hydrazine and hydroxylamine

Discussion

5.	What happens to width of depletion layer when diode is heavily doped and lightly doped?
Answer» What happens to width of depletion layer when diode is heavily doped and lightly doped?

Discussion

6.	If oxidation state of elements oxygen and fluorine in OF2 molecule is... -1 for fluorine and +2 for Oxygen... Then what is the oxidation state for the elements fluorine in an F2 molecule?
Answer» If oxidation state of elements oxygen and fluorine in OF₂molecule is... -1 for fluorine and +2 for Oxygen... Then what is the oxidation state for the elements fluorine in an F₂molecule?

Discussion

7.	Which is the most common oxidation state of lanthanides and actinide series?
Answer» Which is the most common oxidation state of lanthanides and actinide series?

Discussion

8.	Pyridine is less basic than triethylamine because:
Answer» Pyridine is less basic than triethylamine because:

Discussion

9.	Hydrogen spectrum gave a series of lines at 5R36 , 3R16 and 21R100 cm(inverse) (R=Rydberg constant in cm(inverse)). These lines belong to which series?
Answer» Hydrogen spectrum gave a series of lines at $\frac{5 R}{36}$ , $\frac{3 R}{16}$ and $\frac{21 R}{100}$ cm(inverse) (R=Rydberg constant in cm(inverse)). These lines belong to which series?

Discussion

10.	Reason for geometrical isomerism shown by but-2-ene is
Answer» Reason for geometrical isomerism shown by but-2-ene is

Discussion

11.	(i)(CH3)2NH−−−−−−−−→DMF,Δ A H2/Pd−C−−−−−−→ B
Answer» $(i) (C H_{3})_{2} N H - ------- \to D M F, Δ A H_{2} / P d - C - ----- \to B$

Discussion

12.	Coloured oxide of nitrogen is
Answer» Coloured oxide of nitrogen is

Discussion

13.	Match the classes of monosaccharides listed in column I with examples given in column II and select the right number showing the correct combination of alphabets of the two columns Column IColumn IMonosaccharidesExamplesATetroseseC7H14O7BHexosesfC4H8O4CPentosesgC6H12O6DHeptoseshC5H10O5iC3H6O3
Answer» Match the classes of monosaccharides listed in column I with examples given in column II and select the right number showing the correct combination of alphabets of the two columns $\begin{matrix} Column I & Column I Monosaccharides & Examples A & Tetroses & e & C_{7} H_{14} O_{7} B & Hexoses & f & C_{4} H_{8} O_{4} C & Pentoses & g & C_{6} H_{12} O_{6} D & Heptoses & h & C_{5} H_{10} O_{5} i & C_{3} H_{6} O_{3} \end{matrix}$

13.

Match the classes of monosaccharides listed in column I with examples given in column II and select the right number showing the correct combination of alphabets of the two columns Column IColumn IMonosaccharidesExamplesATetroseseC7H14O7BHexosesfC4H8O4CPentosesgC6H12O6DHeptoseshC5H10O5iC3H6O3

Answer»

Match the classes of monosaccharides listed in column I with examples given in column II and select the right number showing the correct combination of alphabets of the two columns

$\begin{matrix} Column I & Column I Monosaccharides & Examples A & Tetroses & e & C_{7} H_{14} O_{7} B & Hexoses & f & C_{4} H_{8} O_{4} C & Pentoses & g & C_{6} H_{12} O_{6} D & Heptoses & h & C_{5} H_{10} O_{5} i & C_{3} H_{6} O_{3} \end{matrix}$

Discussion

14.	Assertion (A) Bond angle in ethers is slightly less than the tetrahedral angle. Reason (R) There is a repulsion between the two bulky (- R) groups. (a) Assertion and reason both are correct and reason is correct explanation of assertion. (b) Assertion and reason both are wrong statements. (c) Assertion is correct statement but reason is wrong statement. (d) Assertion is wrong statement but reason is correct statement. (e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.
Answer» Assertion (A) Bond angle in ethers is slightly less than the tetrahedral angle. Reason (R) There is a repulsion between the two bulky (- R) groups. (a) Assertion and reason both are correct and reason is correct explanation of assertion. (b) Assertion and reason both are wrong statements. (c) Assertion is correct statement but reason is wrong statement. (d) Assertion is wrong statement but reason is correct statement. (e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Discussion

15.	The electrical resistance of a column of 0.05 M NaOH solution of diameter 1 cm and length 50 cm is 5.55×103 ohm. Calculate its resistivity, conductivity, and molar conductivity.
Answer» The electrical resistance of a column of 0.05 M NaOH solution of diameter 1 cm and length 50 cm is $5.55 \times 10^{3}$ ohm. Calculate its resistivity, conductivity, and molar conductivity.

Discussion

16.	The product of the following reaction is: Ph−NH2COCl2/Pyridine−−−−−−−−−−→(inert solvent)
Answer» The product of the following reaction is: $P h - N H_{2} C O C l_{2} / Pyridine - --------- \to (inert solvent)$

Discussion

17.	Which of the following options given below are correct?
Answer» Which of the following options given below are correct?

Discussion

18.	Question 17 Value of Henry's constant K4.......... (a) increases with increase in temperature (b) decreases with increase in temperature (c) remains constant (d) first increases then decreases
Answer» Question 17 Value of Henry's constant $K_{4} . . . . . . . . . .$ (a) increases with increase in temperature (b) decreases with increase in temperature (c) remains constant (d) first increases then decreases

Discussion

19.	Arrange the following compounds in increasing order of their boiling points. (a) (ii) < (i) < (iii) (b) (i) < (ii) < (iii) (c) (iii) < (i) < (ii) (d) (iii) < (ii) <(i)
Answer» Arrange the following compounds in increasing order of their boiling points. (a) (ii) < (i) < (iii) (b) (i) < (ii) < (iii) (c) (iii) < (i) < (ii) (d) (iii) < (ii) <(i)

19.

Arrange the following compounds in increasing order of their boiling points. (a) (ii) < (i) < (iii) (b) (i) < (ii) < (iii) (c) (iii) < (i) < (ii) (d) (iii) < (ii) <(i)

Answer»

Arrange the following compounds in increasing order of their boiling points.

(a) (ii) < (i) < (iii) (b) (i) < (ii) < (iii)

(c) (iii) < (i) < (ii) (d) (iii) < (ii) <(i)

Discussion

20.	A large number of fish are suddenly found floating dead on a lake. There is no evidence of toxic dumping but you find an abundance of phytoplankton. Suggest a reason for the fish kill.
Answer» A large number of fish are suddenly found floating dead on a lake. There is no evidence of toxic dumping but you find an abundance of phytoplankton. Suggest a reason for the fish kill.

Discussion

21.	M+NMixture→B+C↑+H2O+DBrown↑+Ecolourless↑ CCa(OH)2−−−−−→FWhite pptCO2+H2O−−−−−−→G CCa(OH)2−−−−−→No decolourisation NFeSO4−−−−→H2SO4No brown ring observed NNa2SO4−−−−−→LWhite ppt+OSolutionFilter−−−→ CO2+H2O−−−−−−→Brown ring observed B→Yellow in both hot and cold condition List - IList - II(I) M(P) PbSO4(II) B(Q) Ca(HCO3)2(III) L(R) CaCO3(IV) O(S) PbO(T) PbCO3(U) NaNO3 Which of the following options has the correct combination considering List-I and List-II?
Answer» $M + N Mixture \to B + C ↑ + H_{2} O + D Brown ↑ + E colourless ↑$ $C C a (O H)_{2} - ---- \to F White ppt C O_{2} + H_{2} O - ----- \to G$ $C C a (O H)_{2} - ---- \to No decolourisation$ $N F e S O_{4} - --- \to H_{2} S O_{4} No brown ring observed$ $N N a_{2} S O_{4} - ---- \to L White ppt + O Solution Filter - -- \to C O_{2} + H_{2} O - ----- \to Brown ring observed$ $B \to Yellow in both hot and cold condition$ $\begin{matrix} List - I & List - II (I) M & (P) P b S O_{4} (II) B & (Q) C a (H C O_{3})_{2} (III) L & (R) C a C O_{3} (IV) O & (S) P b O (T) P b C O_{3} (U) N a N O_{3} \end{matrix}$ Which of the following options has the correct combination considering List-I and List-II?

Discussion

22.	The correct order of reactivity of group in given compounds is:
Answer» The correct order of reactivity of group in given compounds is:

Discussion

23.	The equilibrium constant for the decomposition of water, H2O(g)→H2(g)+12O2(g) is given by:
Answer» The equilibrium constant for the decomposition of water, $H_{2} O (g) \to H_{2} (g) + \frac{1}{2} O_{2} (g)$ is given by:

Discussion

24.	Match the polymers given in Column I with their main applications given in Coloumn II. Column IColumn IIA. Bakelite1.Unbreakable crockeryB. Low density polyethene2.Non−stick cookwaresC. Melamine−formaldehyde resin 3.Packaging material for shock absorbanceD. Nylon−64.Electrical switchesE. Polytetrafluoroethane5.Squeeze bottlesF. Polystyrene6.Tyre,cords
Answer» Match the polymers given in Column I with their main applications given in Coloumn II. $\begin{matrix} C o l u m n I & C o l u m n I I A . B a k e l i t e & 1. & U n b r e a k a b l e c r o c k e r y B . L o w d e n s i t y p o l y e t h e n e & 2. & N o n - s t i c k c o o k w a r e s C . M e l a m i n e - f o r m a l d e h y d e r e s i n & 3. & P a c k a g i n g m a t e r i a l f o r s h o c k a b s o r b a n c e D . N y l o n - 6 & 4. & E l e c t r i c a l s w i t c h e s E . P o l y t e t r a f l u o r o e t h a n e & 5. & S q u e e z e b o t t l e s F . P o l y s t y r e n e & 6. & T y r e, c o r d s \end{matrix}$

24.

Match the polymers given in Column I with their main applications given in Coloumn II. Column IColumn IIA. Bakelite1.Unbreakable crockeryB. Low density polyethene2.Non−stick cookwaresC. Melamine−formaldehyde resin 3.Packaging material for shock absorbanceD. Nylon−64.Electrical switchesE. Polytetrafluoroethane5.Squeeze bottlesF. Polystyrene6.Tyre,cords

Answer»

Match the polymers given in Column I with their main applications given in Coloumn II.

$\begin{matrix} C o l u m n I & C o l u m n I I A . B a k e l i t e & 1. & U n b r e a k a b l e c r o c k e r y B . L o w d e n s i t y p o l y e t h e n e & 2. & N o n - s t i c k c o o k w a r e s C . M e l a m i n e - f o r m a l d e h y d e r e s i n & 3. & P a c k a g i n g m a t e r i a l f o r s h o c k a b s o r b a n c e D . N y l o n - 6 & 4. & E l e c t r i c a l s w i t c h e s E . P o l y t e t r a f l u o r o e t h a n e & 5. & S q u e e z e b o t t l e s F . P o l y s t y r e n e & 6. & T y r e, c o r d s \end{matrix}$

Discussion

25.	Question 36 Explain why PCl5 is trigonal bipyramidal whereas IF5 is square pyramidal.
Answer» Question 36 Explain why $P C l_{5}$ is trigonal bipyramidal whereas $I F_{5}$ is square pyramidal.

25.

Question 36 Explain why PCl5 is trigonal bipyramidal whereas IF5 is square pyramidal.

Answer»

Question 36

Explain why $P C l_{5}$ is trigonal bipyramidal whereas $I F_{5}$ is square pyramidal.

Discussion

26.	A compound absorbing violet colour from sunlight will be
Answer» A compound absorbing violet colour from sunlight will be

Discussion

27.	Amploteric hydroxides react with both alkalies and acids. Which of the following Group 2 metal hydroxides is soluble in sodium hydroxide? (a) Be(OH)2 (b) Mg(OH)2 (c) Ca(OH)2 (d) Ba(OH)2
Answer» Amploteric hydroxides react with both alkalies and acids. Which of the following Group 2 metal hydroxides is soluble in sodium hydroxide? (a) $B e (O H)_{2}$ (b) $M g (O H)_{2}$ (c) $C a (O H)_{2}$ (d) $B a (O H)_{2}$

Discussion

28.	39g of H2 react with 29g of O2 to give H2O. Which is the limmiting reagent? Calculate the maximum amount of H2O that can be formed. Calculate the amount of one of the reactants that remains unreacted.
Answer» 39g of H₂ react with 29g of O₂ to give H₂O. Which is the limmiting reagent? Calculate the maximum amount of H₂O that can be formed. Calculate the amount of one of the reactants that remains unreacted.

Discussion

29.	Nickel is refined by
Answer» Nickel is refined by

Discussion

30.	Among the following ionisation processes, pick out the process where the bond order has increased and the magnetic behaviour has changed.
Answer» Among the following ionisation processes, pick out the process where the bond order has increased and the magnetic behaviour has changed.

Discussion

31.	In which of the following crystals alternate tetrahedral voids are occupied
Answer» In which of the following crystals alternate tetrahedral voids are occupied

Discussion

32.	Predict the products of the following reactions: (i)CH3−C=OHCN−−−→? \| CH3 (ii)C6H5−CH2−CH3(a)KmnO4/KOH−−−−−−−−−−−→(b)H+? (iii)CH3COOHNH3/Δ−−−−→
Answer» Predict the products of the following reactions: $(i) C H_{3} - C = O H C N - -- \to ? \| C H_{3}$ $(i i) C_{6} H_{5} - C H_{2} - C H_{3} (a) K m n O_{4} / K O H - ---------- \to (b) H^{+} ?$ $(i i i) C H_{3} C O O H N H_{3} / Δ - --- \to$

32.

Predict the products of the following reactions: (i)CH3−C=OHCN−−−→? | CH3 (ii)C6H5−CH2−CH3(a)KmnO4/KOH−−−−−−−−−−−→(b)H+? (iii)CH3COOHNH3/Δ−−−−→

Answer»

Predict the products of the following reactions:

(i) C H_{3} - C = O H C N - -- \to ? | C H_{3}

$(i i) C_{6} H_{5} - C H_{2} - C H_{3} (a) K m n O_{4} / K O H - ---------- \to (b) H^{+} ?$

$(i i i) C H_{3} C O O H N H_{3} / Δ - --- \to$

Discussion

33.	A mixture of H2 and I2 in molecular proportion of 2 : 3 was heated at 440∘C till the reaction H2+I2 ⇌ 2HI reached equilibrium state. Calculate the percentage of iodine converted into HI (KCat 440∘C is 0.02)
Answer» A mixture of $H_{2}$ and $I_{2}$ in molecular proportion of 2 : 3 was heated at $440^{\circ} C$ till the reaction $H_{2} + I_{2}$ $⇌$ 2HI reached equilibrium state. Calculate the percentage of iodine converted into HI (KCat 440 $^{\circ}$ C is 0.02)

Discussion

34.	Among P, Q, R and S the aromatic compound(s) is/are:
Answer» Among P, Q, R and S the aromatic compound(s) is/are:

Discussion

35.	Match list-I with list-II and select the correct answer using the codes given below - List-I List-II Ion Radius (in pm) (I) Li+ (a) 216 (II) Na+ (b) 195 (III) Br− (c) 60 (IV) I− (d) 95
Answer» Match list-I with list-II and select the correct answer using the codes given below - List-I List-II Ion Radius (in pm) (I) $L i^{+}$ (a) 216 (II) $N a^{+}$ (b) 195 (III) $B r^{-}$ (c) 60 (IV) $I^{-}$ (d) 95

35.

Match list-I with list-II and select the correct answer using the codes given below - List-I List-II Ion Radius (in pm) (I) Li+ (a) 216 (II) Na+ (b) 195 (III) Br− (c) 60 (IV) I− (d) 95

Answer»

Match list-I with list-II and select the correct answer using the codes given below -

List-I List-II

Ion Radius (in pm)

(I) $L i^{+}$ (a) 216

(II) $N a^{+}$ (b) 195

(III) $B r^{-}$ (c) 60

(IV) $I^{-}$ (d) 95

Discussion

36.	The major product of the following reaction is:
Answer» The major product of the following reaction is:

Discussion

37.	A mixture of methane and ethyne in the volume ratio x:y has a total volume of 30 mL. On complete combustion it gave 40 mL of CO2 if the ratio had been y:x what volume of CO2 would have been obtained?
Answer» A mixture of methane and ethyne in the volume ratio $x : y$ has a total volume of $30 m L$ . On complete combustion it gave 40 mL of $C O_{2}$ if the ratio had been $y : x$ what volume of $C O_{2}$ would have been obtained?

Discussion

38.	Out of the following ions which one is colourless?
Answer» Out of the following ions which one is colourless?

Discussion

39.	CH3O−CH=CH−NO21CH2=CH−NO22CH2=CH−Cl3CH2=CH24 Which of the following is the correct order of bond length among these compounds?
Answer» $\begin{matrix} C H_{3} O - C H = C H - N O_{2} & 1 C H_{2} = C H - N O_{2} & 2 C H_{2} = C H - C l & 3 C H_{2} = C H_{2} & 4 \end{matrix}$ Which of the following is the correct order of bond length among these compounds?

39.

CH3O−CH=CH−NO21CH2=CH−NO22CH2=CH−Cl3CH2=CH24 Which of the following is the correct order of bond length among these compounds?

Answer»

$\begin{matrix} C H_{3} O - C H = C H - N O_{2} & 1 C H_{2} = C H - N O_{2} & 2 C H_{2} = C H - C l & 3 C H_{2} = C H_{2} & 4 \end{matrix}$

Which of the following is the correct order of bond length among these compounds?

Discussion

40.	Which one of the following mixed sulphates is not an alum ?
Answer» Which one of the following mixed sulphates is not an alum ?

Discussion

41.	Fe2+ shows
Answer» $F e^{2 +}$ shows

Discussion

42.	For the cell reaction A+B2+(aq)→C+D2+(aq) The Equilibrium constant Kc is 100. The E0cell at 25∘C is
Answer» For the cell reaction $A + B^{2 +} (a q) \to C + D^{2 +} (a q)$ The Equilibrium constant $K_{c}$ is 100. The $E_{c e l l}^{0}$ at $25^{\circ} C$ is

Discussion

43.	If total enthalpy of reactants & products is HR & HP respectively, then for exothermic reaction:
Answer» If total enthalpy of reactants & products is $H_{R}$ & $H_{P}$ respectively, then for exothermic reaction:

Discussion

44.	What is Bromine water? Its preparation, properties and uses?
Answer» What is Bromine water? Its preparation, properties and uses?

Discussion

45.	Amongst the following, the total number of compounds soluble in aqueous NaOH is ___
Answer» Amongst the following, the total number of compounds soluble in aqueous NaOH is ___

Discussion

46.	Which one of the following will be most reactive for SNI reaction?
Answer» Which one of the following will be most reactive for $S_{N} I$ reaction?

Discussion

47.	The following equilibria are given: N2 +3H2 ⇋ 2NH3 K1 ; N2 + O2 ⇋ 2NO K2 ; H2 + 12 O2 ⇋ H2OK3 ; The Equilibrium constant for the reaction 2NH3 + 52 O2 ⇋ 2NO + 3H2 O in terms of K1, K2 and K3 is:
Answer» The following equilibria are given: $N_{2}$ +3 $H_{2}$ $⇋$ $2 N H_{3}$ $K_{1}$ ; $N_{2}$ + $O_{2}$ $⇋$ 2NO $K_{2}$ ; $H_{2}$ + $\frac{1}{2}$ $O_{2}$ $⇋$ $H_{2} O K_{3}$ ; The Equilibrium constant for the reaction $2 N H_{3}$ + $\frac{5}{2}$ $O_{2}$ $⇋$ 2NO + 3 $H_{2}$ O in terms of $K_{1}$ , $K_{2}$ and $K_{3}$ is:

47.

The following equilibria are given: N2 +3H2 ⇋ 2NH3 K1 ; N2 + O2 ⇋ 2NO K2 ; H2 + 12 O2 ⇋ H2OK3 ; The Equilibrium constant for the reaction 2NH3 + 52 O2 ⇋ 2NO + 3H2 O in terms of K1, K2 and K3 is:

Answer»

The following equilibria are given: $N_{2}$ +3 $H_{2}$ $⇋$ $2 N H_{3}$ $K_{1}$ ; $N_{2}$ + $O_{2}$ $⇋$ 2NO $K_{2}$ ;
$H_{2}$ + $\frac{1}{2}$ $O_{2}$ $⇋$ $H_{2} O K_{3}$ ;

The Equilibrium constant for the reaction $2 N H_{3}$ + $\frac{5}{2}$ $O_{2}$ $⇋$ 2NO + 3 $H_{2}$ O in terms of $K_{1}$ , $K_{2}$ and $K_{3}$ is:

Discussion

48.	In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options: Statement - 1 : The transition of electrons n3→n2 in H - atom will emit radiation of higher frequency than n4→n3. Statement - 2 : Principal shells n2 n3 have lower energy than n4.
Answer» In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options: Statement - 1 : The transition of electrons $n_{3} \to n_{2}$ in H - atom will emit radiation of higher frequency than $n_{4} \to n_{3}$ . Statement - 2 : Principal shells $n_{2}$ $n_{3}$ have lower energy than $n_{4}$ .

48.

In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options: Statement - 1 : The transition of electrons n3→n2 in H - atom will emit radiation of higher frequency than n4→n3. Statement - 2 : Principal shells n2 n3 have lower energy than n4.

Answer»

In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options:

Statement - 1 : The transition of electrons $n_{3} \to n_{2}$ in H - atom will emit radiation of higher frequency than $n_{4} \to n_{3}$ .

Statement - 2 : Principal shells $n_{2}$ $n_{3}$ have lower energy than $n_{4}$ .

Discussion

49.	1∘, 2∘, 3∘ and 4∘ carbon atoms are present in
Answer» $1^{\circ}, 2^{\circ}, 3^{\circ} a n d 4^{\circ}$ carbon atoms are present in

Discussion

50.	Which one is not true about catalyst ?
Answer» Which one is not true about catalyst ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

For the elementary reaction M⟶N, the rate of disappearance of M increases by a factor of 8 upon doubling the concentration of M. The order of the reaction with respect to M is

Why can't a isothermal process occur in a isolated system

In which of the following complexes is the effective atomic number not equal to the atomic number of an inert gas?

In which pair of compounds the oxidation state of nitrogen is -1? a)ammonia ,hydroxylamine b)nitric oxide and nitric acid c)hydrazine and ammonia d)hydrazine and hydroxylamine

What happens to width of depletion layer when diode is heavily doped and lightly doped?

If oxidation state of elements oxygen and fluorine in OF​​​​​2 molecule is... -1 for fluorine and +2 for Oxygen... Then what is the oxidation state for the elements fluorine in an F​​​​​​2 molecule?

Which is the most common oxidation state of lanthanides and actinide series?

Pyridine is less basic than triethylamine because:

Hydrogen spectrum gave a series of lines at 5R36 , 3R16 and 21R100 cm(inverse) (R=Rydberg constant in cm(inverse)). These lines belong to which series?

Reason for geometrical isomerism shown by but-2-ene is

(i)(CH3)2NH−−−−−−−−→DMF,Δ A H2/Pd−C−−−−−−→ B

Coloured oxide of nitrogen is

Match the classes of monosaccharides listed in column I with examples given in column II and select the right number showing the correct combination of alphabets of the two columns Column IColumn IMonosaccharidesExamplesATetroseseC7H14O7BHexosesfC4H8O4CPentosesgC6H12O6DHeptoseshC5H10O5iC3H6O3

The electrical resistance of a column of 0.05 M NaOH solution of diameter 1 cm and length 50 cm is 5.55×103 ohm. Calculate its resistivity, conductivity, and molar conductivity.

The product of the following reaction is: Ph−NH2COCl2/Pyridine−−−−−−−−−−→(inert solvent)

Which of the following options given below are correct?

Question 17 Value of Henry's constant K4.......... (a) increases with increase in temperature (b) decreases with increase in temperature (c) remains constant (d) first increases then decreases

Arrange the following compounds in increasing order of their boiling points. (a) (ii) &lt; (i) &lt; (iii) (b) (i) &lt; (ii) &lt; (iii) (c) (iii) &lt; (i) &lt; (ii) (d) (iii) &lt; (ii) &lt;(i)

A large number of fish are suddenly found floating dead on a lake. There is no evidence of toxic dumping but you find an abundance of phytoplankton. Suggest a reason for the fish kill.

The correct order of reactivity of group in given compounds is:

The equilibrium constant for the decomposition of water, H2O(g)→H2(g)+12O2(g) is given by:

Question 36 Explain why PCl5 is trigonal bipyramidal whereas IF5 is square pyramidal.

A compound absorbing violet colour from sunlight will be

Amploteric hydroxides react with both alkalies and acids. Which of the following Group 2 metal hydroxides is soluble in sodium hydroxide? (a) Be(OH)2 (b) Mg(OH)2 (c) Ca(OH)2 (d) Ba(OH)2

39g of H2 react with 29g of O2 to give H2O. Which is the limmiting reagent? Calculate the maximum amount of H2O that can be formed. Calculate the amount of one of the reactants that remains unreacted.

Nickel is refined by

Among the following ionisation processes, pick out the process where the bond order has increased and the magnetic behaviour has changed.

In which of the following crystals alternate tetrahedral voids are occupied

Predict the products of the following reactions: (i)CH3−C=OHCN−−−→? | CH3 (ii)C6H5−CH2−CH3(a)KmnO4/KOH−−−−−−−−−−−→(b)H+? (iii)CH3COOHNH3/Δ−−−−→

A mixture of H2 and I2 in molecular proportion of 2 : 3 was heated at 440∘C till the reaction H2+I2 ⇌ 2HI reached equilibrium state. Calculate the percentage of iodine converted into HI (KCat 440∘C is 0.02)

Among P, Q, R and S the aromatic compound(s) is/are:

Match list-I with list-II and select the correct answer using the codes given below - List-I List-II Ion Radius (in pm) (I) Li+ (a) 216 (II) Na+ (b) 195 (III) Br− (c) 60 (IV) I− (d) 95

The major product of the following reaction is:

A mixture of methane and ethyne in the volume ratio x:y has a total volume of 30 mL. On complete combustion it gave 40 mL of CO2 if the ratio had been y:x what volume of CO2 would have been obtained?

Out of the following ions which one is colourless?

CH3O−CH=CH−NO21CH2=CH−NO22CH2=CH−Cl3CH2=CH24 Which of the following is the correct order of bond length among these compounds?

Which one of the following mixed sulphates is not an alum ?

Fe2+ shows

For the cell reaction A+B2+(aq)→C+D2+(aq) The Equilibrium constant Kc is 100. The E0cell at 25∘C is

If total enthalpy of reactants &amp; products is HR &amp; HP respectively, then for exothermic reaction:

What is Bromine water? Its preparation, properties and uses?

Amongst the following, the total number of compounds soluble in aqueous NaOH is ___

Which one of the following will be most reactive for SNI reaction?

The following equilibria are given: N2 +3H2 ⇋ 2NH3 K1 ; N2 + O2 ⇋ 2NO K2 ; H2 + 12 O2 ⇋ H2OK3 ; The Equilibrium constant for the reaction 2NH3 + 52 O2 ⇋ 2NO + 3H2 O in terms of K1, K2 and K3 is:

1∘, 2∘, 3∘ and 4∘ carbon atoms are present in

Which one is not true about catalyst ?

If oxidation state of elements oxygen and fluorine in OF2 molecule is... -1 for fluorine and +2 for Oxygen... Then what is the oxidation state for the elements fluorine in an F2 molecule?

Arrange the following compounds in increasing order of their boiling points. (a) (ii) < (i) < (iii) (b) (i) < (ii) < (iii) (c) (iii) < (i) < (ii) (d) (iii) < (ii) <(i)

If total enthalpy of reactants & products is HR & HP respectively, then for exothermic reaction: