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NaClO₃ is used, even in spacecrafts, to produce O₂

NaClO3 is used, even in spacecrafts, to produce O2. The daily consumption of pure O2 by a person is 492 L at 1 atm, 300 K. How much amount of... View Article

For an electrochemical cell

For an electrochemical cell The ratio [Sn2+]/[Pb2+] when this cell attains equilibrium is ______. Solution:Anodic half: Sn → Sn 2+ +... View Article

Two monomers of maltose are:

a. alpha-D-Glucose and alpha-D-Galactoseb. alpha-D-Glucose and alpha-D-Glucosec. alpha-D-Glucose and alpha-D-Fructosed. alpha-D-Glucose and... View Article

Preparation of Bakelite proceeds via reactions:

a. Electrophilic substitution and dehydration.b. Electrophilic addition and dehydration.c. Condensation and eliminationd. Nucleophilic addition... View Article

An unsaturated hydrocarbon absorbs two hydrogen molecules on catalytic hydrogenation, and also gives following reaction

An unsaturated hydrocarbon absorbs two hydrogen molecules on catalytic hydrogenation, and also gives following reaction; will be:... View Article

Kjeldahl’s method cannot be used to estimate nitrogen for which of the following compounds?

a. 3 2 − ≡ b. 6 5 2c. 6 5 2d. Solution:Kjeldahl method cannot be used for the estimation of nitrogen in the compounds in which nitrogen is... View Article

Among the following compounds A and B with molecular formula

Among the following compounds A and B with molecular formula C9H18O3, A is having higher boiling point than B. The possible structures of A and B... View Article

Find The major product [B] of the following sequence of reactions is

Find The major product [B] of the following sequence of reactions is:Answer to this question is option cExplanation:... View Article

The major product of the following reactions is:

The major product of the following reactions is:Answer to this question is option dExplanation:... View Article

For the following Assertion and Reason, pick the correct option

Assertion: For hydrogenation reactions, the catalytic activity increases from group-5 to group11 metals with maximum activity shown by group 7-9... View Article

Among (a) – (d), the complexes that can display geometrical isomerism are:

A. [Pt(NH3)3Cl]+ B. [Pt(NH3)Cl5]C. [Pt(NH3)2Cl(NO2)]D. [Pt(NH3)4ClBr] 2+a. A and Bb. D and Ac. C and Dd. B and CSolution:The complexes of type... View Article

The increasing order of the atomic radii of the following elements is:

A. CB. OC. FD. ClE. Bra. B<C<D<A<Eb. C<B<A<D<Ec. A<B<C<D<Ed. D<C<B<A<E lSolution:Across the... View Article

Among the reactions (a) – (d), the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are:

A. CaO + SiO2→ CaSiO3 B. 3Fe2O3 + CO → 2Fe3O4 + CO2C. FeO +SiO2 →FeSiO3 D. FeO → Fe + (1/2)O2 a. Ab. Dc. C and Dd. A and DSolution:In metallurgy... View Article

Which of the following compounds is likely to show both Frenkel and Schottky defects in its crystalline form?

a. ZnSb. CsClc. KBrd. AgBrSolution:The radius ratio for AgBr is intermediate. Thus, it shows both Frenkel and Schottky defects.Answer: d... View Article

Consider the following plots of rate constant versus 1/ for four different reactions.

Consider the following plots of rate constant versus 1/ for four different reactions. Which of the following orders is correct for the... View Article

Hydrogen has three isotopes (A), (B) and (C). If the number of neutron(s) in (A), (B) and (C) respectively, are (x), (y) and (z), the sum of (x), (y) and (z) is:

a. 4b. 1c. 3d. 2Solution:Number of neutrons in protium = 0Number of neutrons in deuterium = 1Number of neutrons in tritium = 2So, total number of... View Article

M	T	W	T	F	S	S
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30