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Shilpi98
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Joined: Dec 29, 2021
Last seen: Mar 10, 2022
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Topics: 2165 / Replies: 0
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Topic
Nuisance growth of aquatic plants and bloom-forming algae in natural waters is generally due to high concentrations of
4 years ago
Forum
Environmental Issues
Replies: 0
Views: 96
Topic
Which one of the following diseases is not due to contamination of water?
4 years ago
Forum
Environmental Issues
Replies: 0
Views: 88
Topic
The decomposition of hydrocarbon follows the equation k = (4.5 x 10^11 s^-1) e^-28000 K/T Calculate Ea.
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 187
Topic
Sucrose decomposes in acid solution into glucose and fructose according to the first order rate law, with t1/2 = 3.00 hours. What fraction of sample of sucrose remains after 8 hours?
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 184
Topic
Consider a certain reaction A → Products with k = 2.0 x 10^-2 s^-1. Calculate the concentration of A remaining after 100 s if the initial concentration of A is 1.0 mol L^-1.
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 153
Topic
Which of the following products cannot be obtained in ozonolysis of o-xylene?
4 years ago
Forum
Hydrocarbons
Replies: 0
Views: 137
Topic
The major product obtained in the following reaction
4 years ago
Forum
Hydrocarbons
Replies: 0
Views: 74
Topic
A compound (X) (C5H8) reacts with ammonical AgNO3 to give a white precipitate, and on oxidation with hot alkaline KMnO4 gives the acid, (CH3)2CHCOOH, therefore X is
4 years ago
Forum
Hydrocarbons
Replies: 0
Views: 134
Topic
The major product of the following reaction H3C - C ≡ CH
4 years ago
Forum
Hydrocarbons
Replies: 0
Views: 96
Topic
A3B2 is a sparingly soluble salt of molar mass M (g mol^-1) and solubility x g L^-1. The solubility product satisfies Ksp = a(x/M)^5. The value of a is ________.
4 years ago
Forum
Chemistry
Replies: 0
Views: 139
Topic
Ge(Z = 32) in its ground state electronic configuration has x completely filled orbitals with ml = 0. The value of x is _______.
4 years ago
Forum
Chemistry
Replies: 0
Views: 250
Topic
According to the following figure, the magnitude of the enthalpy change of the reaction A + B → M + N in kJ mol^-1 is equal to _________.
4 years ago
Forum
Chemistry
Replies: 0
Views: 587
Topic
The number of hydrogen bonded water molecule(s) associated with stoichiometry CuSO4 .5H2O is _______.
4 years ago
Forum
Chemistry
Replies: 0
Views: 135
Topic
For a first order reaction, the ratio of the time for 75% completion of a reaction to the time for 50% completion is _______.
4 years ago
Forum
Chemistry
Replies: 0
Views: 188
Topic
The number of halogen/(s) forming halic (V) acid is __________.
4 years ago
Forum
Chemistry
Replies: 0
Views: 280
Topic
The total number of reagents from those given below, that can convert nitrobenzene into aniline is ______.
4 years ago
Forum
Chemistry
Replies: 0
Views: 317
Topic
Consider the sulphides HgS, PbS, CuS, Sb2S3, As2S3 and CdS. Number of these sulphides soluble in 50% HNO3 is ________.
4 years ago
Forum
Chemistry
Replies: 0
Views: 302
Topic
The molarity of the solution prepared by dissolving 6.3 g of oxalic acid (H2C2O4.2H2O) in 250 mL of water in mol L^-1 is x × 10^-2.
4 years ago
Forum
Chemistry
Replies: 0
Views: 167
Topic
Consider the following cell reaction: Cd(s) + Hg2SO4(s) + 9/5H2O(l) ⇌ CdSO4.9/5H2O(s) + 2Hg(l) The value of E0cell is 4.315 V at 25°C. If ΔH° = -825.2 kJ mol^-1
4 years ago
Forum
Chemistry
Replies: 0
Views: 236
Topic
Which one of the following impurities is easiest to remove from wastewater?
4 years ago
Forum
Environmental Issues
Replies: 0
Views: 220
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