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Question 1 of 10

Oxidation states of P in {tex}H_4 P_2 O_5, H_4 P_2 O_6, H_4 P_2 O_7{/tex} are respectively.

A+3, +5, +4

B+5, +3, +4

C+5, +4, +3

D+3, +4, +5

Question 2 of 10

The correct order of ionic radii of {tex}Y^{3+}, La^{3+}, Eu^{3+}{/tex} and {tex}Lu^{3+}{/tex}is

A{tex}Y^{3+} < La^{3+} + Eu^{3+} < Lu^{3+}{/tex}

B{tex}Lu^{3+} << Y^{3+} < Eu^{3+} < La^{3+}{/tex}

C{tex}Lu^{3+} < Eu^{3+} < La^{3+} < Y^{3+}{/tex}

D{tex}La^{3+} < Eu^{3+} < La^{3+} < Y^{3+}{/tex}

Question 3 of 10

Which substance serves as a reducing agent in the following reaction, {tex}14H^{+} + Cr_2O^{2-}_7 + 3Ni \rightarrow 2Cr^{3+} + 7H_2O + 3Ni^{2+}{/tex}

A{tex}H_2O{/tex} and alcohol

BNi

C{tex}H^{+}{/tex}

D{tex}Cr_2O^{2-}_{7}{/tex}

Question 4 of 10

If n(A) = 4, n(B) = 3, n ( A✗ B ✗ C) = 24, then n(C) is equal to

A288

C12

Question 5 of 10

The values of λ so that the line 3x-4y=λ touches x²+y²-4x-8y-5=0 are

A-35, 15

B3, -5

C35, -15

D-3, 5

E20, 15

Question 6 of 10

The radius of the coil which has 10 turns is 0.1m. The current required to produce a deflection of 60° (B_h = 4×10^-5T)

A3A

B1.1A

C2.1A

D1.5A

E2.6A

Question 7 of 10

The correct IUPAC name of the acid

AZ-3-ethyl-4-methyl hex-3-en-1-oic acid

BZ-3-ethyl-4-methyl hexanoic acid

CZ-3, 4-diethylpent-3-en-1-oic acid

DE-3-ethyl-4-methylhex-3-en-1-oic acid

Question 8 of 10

A spring of force constant k is cut into two pieces such that one piece is double the length of the other. The force constant of the longer piece will be

A1.5k

B3k

C(3/2) k

D(2/3) k

E(1/3)k

Question 9 of 10

Auto reduction is employed in the metallurgy of :

AHg

BAl

CTi

DZn

ECr

Question 10 of 10

Under which one of the following conditions, does the reaction take place,

ANH4OH / 80°C

Bconc.H₂SO_4s160Â°C

CAnhydrous ZnCl2 / 150°C

DCH3OK /160 - 200°C

That's all folks!

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