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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
For the reaction R → P, the concentration of a reactant changes from 0.03 M to 0.02 M in 25 minutes. Calculate the average rate of reaction using units of time both in minutes and seconds.
4 years ago
Forum
Chemical Kinetics
Replies: 0
Views: 113
Topic
In the following compounds the order of basicity is
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 92
Topic
A solution of (+) - 2 - chloro - 2 - phenylethane in toluene racemises slowly in the presence of small amounts of SbCl5 due to the formation of
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 158
Topic
Which of the following resonance structure is lowest in energy?
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 290
Topic
Which of the following is correct set of physical properties of the geometrical isomers?
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 126
Topic
An optically active compound (A) is treated with NaI/acetone (B) is obtained What is true about (B)?
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 133
Topic
The correct number of chiral centres in (a) 1 (b) 3 (c) 4 (d) 2
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 133
Topic
Which of the following optically active compounds racemizes in dil. KOH/ CH3OH solution?
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 131
Topic
The correct order of heats of combustion of above compounds is
4 years ago
Forum
Some Basic Principles and Techniques
Replies: 0
Views: 180
Topic
Two plane mirrors M1 and M2 are at right angle to each other show. A point source 'P' is placed at 'a' and '2a' meter away from M1 and M2 respectively.
4 years ago
Forum
Physics
Replies: 0
Views: 187
Topic
A uniform heavy rod of weight 10 kg ms^-2, cross-sectional area 100 cm^2 and length 20 cm is hanging from a fixed support.
4 years ago
Forum
Physics
Replies: 0
Views: 220
Topic
Choose the correct waveform that can represent the voltage across R of the following circuit, assuming the diode is ideal one
4 years ago
Forum
Physics
Replies: 0
Views: 233
Topic
A small square loop of side 'a' and one turn is placed inside a larger square loop of side b and one turn (b >> a). The two loops are coplanar with their centres coinciding.
4 years ago
Forum
Physics
Replies: 0
Views: 118
Topic
The masses and radii of the earth and moon are (M1, R1) and (M2, R2) respectively. Their centres are at a distance 'r' apart.
4 years ago
Forum
Physics
Replies: 0
Views: 162
Topic
Which of the following is a partial root parasite? (a) Sandal wood (b) Mistletoe (c) Orobanche (d) Ganoderma
4 years ago
Forum
Organisms and Populations
Replies: 0
Views: 181
Topic
Lichens are the associations of (a) Bacteria and fungus (b) Algae and bacterium
4 years ago
Forum
Organisms and Populations
Replies: 0
Views: 48
Topic
In 2005, for each of the 14 million people present in a country, 0.028 were born and 0.008 died during the year.
4 years ago
Forum
Organisms and Populations
Replies: 0
Views: 133
Topic
A protozoan reproduces by binary fission. What will be the number of protozoans in its population after six generations? (a) 128 (b) 24 (c) 64 (d) 32
4 years ago
Forum
Organisms and Populations
Replies: 0
Views: 129
Topic
Which of the following would necessarily decrease the density of a population in a given habitat?
4 years ago
Forum
Organisms and Populations
Replies: 0
Views: 89
Topic
What parameters are used for tiger census in our country’s national parks and sanctuaries?
4 years ago
Forum
Organisms and Populations
Replies: 0
Views: 160
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