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Shilpi98
@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 active chemical drug reserpine is obtained from
4 years ago
Forum
Biodiversity and Conservation
Replies: 0
Views: 64
Topic
Which of the following forests is known as the ‘lungs of the planet Earth’?
4 years ago
Forum
Biodiversity and Conservation
Replies: 0
Views: 62
Topic
Among the ecosystem mentioned below, where can one find maximum biodiversity?
4 years ago
Forum
Biodiversity and Conservation
Replies: 0
Views: 67
Topic
Which of the following statements is correct? (a) Parthenium is an endemic species of our country (b) African catfish is not a threat to indigenous catfishes.
4 years ago
Forum
Biodiversity and Conservation
Replies: 0
Views: 72
Topic
For the decomposition of azoisopropane to hexane and nitrogen at 543 K, the following data are obtained.
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 112
Topic
A first order reaction takes 40 min for 30% decomposition. Calculate t1/2.
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 178
Topic
For a first order reaction, show that time required for 99% completion is twice the time required for the completion of 90% of reaction.
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 135
Topic
During nuclear explosion, one of the products is 90^Sr with half-life of 28.1 years. If 1μg of 90^Sr was absorbed in the bones of a newly born baby instead of calcium, how much of it will remain after 10 years and 60 years if it is not lost metabolic...
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 125
Topic
Which of the following will form alkynide?
4 years ago
Forum
Hydrocarbons
Replies: 0
Views: 206
Topic
Which of the following statements is incorrect regarding dehydrohalogenation of alkenes? (a) During the reaction hydrogen atom is eliminated from the β-carbon atom.
4 years ago
Forum
Hydrocarbons
Replies: 0
Views: 105
Topic
Which of the following will yield a mixture of 2-chloro butene and 3-chloro butene on treatment with HCl?
4 years ago
Forum
Hydrocarbons
Replies: 0
Views: 107
Topic
Given below are two statements : Statement I: The process of producing syn-gas is called gasification of coal. Statement II: The composition of syn-gas is CO + CO2 + H2 (1 : 1 : 1)
4 years ago
Forum
Chemistry
Replies: 0
Views: 174
Topic
Monomer of Novolac is : (1) 3-Hydroxybutanoic acid (2) phenol and melamine (3) o-Hydroxymethylphenol
4 years ago
Forum
Chemistry
Replies: 0
Views: 258
Topic
The major product formed in the following reaction is
4 years ago
Forum
Chemistry
Replies: 0
Views: 103
Topic
Assertion (A): Aluminium is extracted from bauxite by the electrolysis of molten mixture of Al2O3 with cryolite. Reason (R): The oxidation state of Al in cryolite is +3.
4 years ago
Forum
Chemistry
Replies: 0
Views: 100
Topic
Which one of the following lanthanides exhibits +2 oxidation state with diamagnetic nature?
4 years ago
Forum
Chemistry
Replies: 0
Views: 156
Topic
The major products A and B in the following set of reactions are
4 years ago
Forum
Chemistry
Replies: 0
Views: 163
Topic
The extinction of passenger pigeon was due to
4 years ago
Forum
Biodiversity and Conservation
Replies: 0
Views: 75
Topic
What is common to Lantana, Eichhomia and African catfish?
4 years ago
Forum
Biodiversity and Conservation
Replies: 0
Views: 75
Topic
Which one of the following is an endangered plant species of India?
4 years ago
Forum
Biodiversity and Conservation
Replies: 0
Views: 184
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