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Deepak Rock
@deepak-rock
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Joined: Aug 6, 2021
Last seen: Sep 10, 2021
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Topics: 1742 / Replies: 303
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Topic
A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish-brown. On rinsing the shirt with plenty of water, the reddish-brown stain turns yellow again. (a) Name the natural indicator ...
4 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 103
Topic
On adding dilute hydrochloric acid to copper oxide powder, the solution formed is blue-green. (a) Predict the new compound formed which imparts a blue-green colour to solution.
4 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 156
Topic
If someone is suffering from the problem of acidity after overeating, which of the following would you suggest as remedy? Lemon juice, Vinegar, Baking soda solution Give reason for your choice.
4 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 86
Topic
The internuclear distances in O – O bonds for O2^+, O2, O2^- and O2^2- respectively are:
4 years ago
Forum
Chemical Bonding and Molecular Structure
Replies: 0
Views: 216
Topic
Bond order normally gives idea of stability of a molecular species. All the molecules viz. H2, Li2 and B2 have the same bond order yet they are not equally stable. Their stability order is
4 years ago
Forum
Chemical Bonding and Molecular Structure
Replies: 0
Views: 395
Topic
In which of the following ionization processes the bond energy has increased and also the magnetic behaviour has changed from paramagnetic to diamagnetic?
4 years ago
Forum
Chemical Bonding and Molecular Structure
Replies: 0
Views: 128
Topic
Which one of the following pairs of molecules will have permanent dipole moments for both members?
4 years ago
Forum
Chemical Bonding and Molecular Structure
Replies: 0
Views: 304
Topic
Which one of the following molecules is paramagnetic?
4 years ago
Forum
Chemical Bonding and Molecular Structure
Replies: 0
Views: 268
Topic
Which of the following has the square planar structure?
4 years ago
Forum
Chemical Bonding and Molecular Structure
Replies: 0
Views: 262
Topic
Dipole moment is shown by (a) 1, 4-dichlorobenzene (b) cis -1, 2-dichlorobenzene
4 years ago
Forum
Chemical Bonding and Molecular Structure
Replies: 0
Views: 284
Topic
What change will you observe by testing soap with litmus paper (blue or red)?
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 342
Topic
Why are carbon and its compounds used as fuels in most cases?
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 309
Topic
Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents such as ethanol also?
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 130
Topic
How can ethanol and ethanoic acid be differentiated on the basis of their physical and chemical properties?
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 334
Topic
What is a homologous series? Explain with an example.
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 310
Topic
Explain the nature of the covalent bond using the bond formation in CH3Cl.
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 349
Topic
While cooking, if the bottom of the vessel is blackened on the outside, it means that
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 166
Topic
Butanone is a four-carbon compound with the functional group
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 347
Topic
Ethane, with the molecular formula C2H6 has: (a) 6 covalent bonds (b) 7 covalent bonds (c) 8 covalent bonds (d) 9 covalent bonds
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 195
Topic
People use different methods to wash clothes. Usually, after adding the soap, they beat the clothes on a stone or beat them with a paddle, scrub with a brush, or the mixture is agitated in a washing machine. Why is this agitation necessary to get cle...
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 92
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