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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
The decomposition of dimethyl ether leads to the formation of CH4, H2 and CO and the reaction rate is given by Rate = k [CH3OCH3]^3/2
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 75
Topic
The decomposition of NH3 on platinum surface is zero order reaction. What are the rates of production of N2 and H2 if k = 2.5 x 10^-4 mol^-1L s^-1?
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 209
Topic
For the reaction: 2A + B → A2B the rate = k[A][B]^2 with k = 2.0 x 10^-6 mol^-2L^2s^-1. Calculate the initial rate of the reaction when
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 194
Topic
From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constants.
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 234
Topic
Which one is compound has plane of symmetry?
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 216
Topic
Indicate whether each of the following pairs are identical or not? (a) I-enantiomers; II-diastereomers; III-enantiomers
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 214
Topic
The enol form of acetone after treatment with D2O gives:
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 140
Topic
Which of the following statements is not correct? (a) Carbocation possesses sextet of electrons. (b) The order of carbocation stability is:
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 158
Topic
Which of the following alkenes is the most stable?
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 171
Topic
One among the following compounds will not give effervescence with sodium carbonate:
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 128
Topic
A wire having a linear mass density 9.0 × 10^–4 kg/m is stretched between two rigid supports with a tension of 900 N. The wire resonates at a frequency of 500 Hz.
4 years ago
Forum
Physics
Replies: 0
Views: 225
Topic
A square shaped wire with resistance of each side 3Ω is bent to form a complete circle. The resistance between two diametrically opposite points of the circle in unit of Ω will be ______.
4 years ago
Forum
Physics
Replies: 0
Views: 218
Topic
If the sum of the heights of transmitting and receiving antennas in the line of sight of communication is fixed at 160 m, then the maximum range of LOS communication is _____km. (Take radius of Earth = 6400 km)
4 years ago
Forum
Physics
Replies: 0
Views: 226
Topic
A particle of mass 1 kg is hanging from a spring of force constant 100 Nm^-1. The mass is pulled slightly downward and released so that it executes free simple harmonic motion with time period T.
4 years ago
Forum
Physics
Replies: 0
Views: 281
Topic
When a rubber ball is taken to a depth of _______m in deep sea, its volume decreases by 0.5%.
4 years ago
Forum
Physics
Replies: 0
Views: 134
Topic
Consider a galvanometer shunted with 5Ω resistance and 2% of current passes through it. What is the resistance of the given galvanometer?
4 years ago
Forum
Physics
Replies: 0
Views: 147
Topic
Approximately how much of the solar energy that falls on the leaves of a plant is converted to chemical energy by photosynthesis?
4 years ago
Forum
Ecosystem
Replies: 0
Views: 76
Topic
Pyramid of numbers is (a) Always upright (b) Always inverted (c) Ether upright or inverted
4 years ago
Forum
Ecosystem
Replies: 0
Views: 89
Topic
Which of the following ecosystems is most productive in terms of net primary production?
4 years ago
Forum
Ecosystem
Replies: 0
Views: 132
Topic
Which of the following is not a producer?
4 years ago
Forum
Ecosystem
Replies: 0
Views: 165
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