The reduction of which of the following compound would yield secondary amine
Anonymous Quiz
10%
The reduction of which of the following compound would yield secondary amine
32%
The lone pair of electrons on the nitrogen atom in aniline is delocalized
34%
The lone pair of electrons on the nitrogen atom in aniline is not involved in resonance
24%
Benzylamine has a higher molecular mass than aniline
Nitration of aniline also gives m-nitro aniline, in strong acidic medium because
Anonymous Quiz
20%
In electrophilic substitution reaction amino group is meta directive
9%
Inspite of substituents nitro group always goes to m- position
25%
In strong acidic medium, nitration of aniline is a nucleophilic substitution reaction
46%
In strong acidic medium aniline present as anilinium ion
Primary, secondary and tertiary amines can be distinguished by
Anonymous Quiz
10%
Schiff's test
12%
Fehling's test
8%
Tollen's test
70%
Hinsberg test
In thermodynamics which one of the following is not an intensive property
Anonymous Quiz
10%
Pressure
25%
Density
47%
Volume
18%
Temperature
“The resultant heat change in a reaction is the same whether it takes place in one or several
stages." This statement is called
stages." This statement is called
Anonymous Quiz
10%
Lavoisier and Laplace law
74%
Hess's law
7%
Joule's law
10%
Le-chatelier's principle
3.Which one of the following is not a characteristic feature of bryophytes?
Anonymous Quiz
11%
Dominant gametophytic generation
8%
Filamentous rhizoids
7%
Amphibious habitat
74%
Vascular tissues
In mosses gametophyte has two stages. What are these stages? aare
Anonymous Quiz
6%
First stage is sporogonium phase and second is-protonema.
89%
First stage is protonema and the second is leafy
4%
First stage is gemmae formation and second is meiosis
1%
First stage is zygote and second is spore mother cell
Sex organs in pteridophytes are formed on the
Anonymous Quiz
31%
Multicellular well-developed sporophyte.
10%
Unicellular main gametophyte of the plant.
37%
Photosynthetic, free living gametophyte
22%
Gametophyte which is nutritionally dependent on sporophyte.
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Identify the correct statement regarding a spontaneous process
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62%
For a spontaneous process in an isolated system, the change in entropy is positive
7%
Endothermic processes are never spontaneous
22%
Exothermic process are always spontaneous
9%
Lowering of energy in the reaction process is the only criterion for spontaneity
The entropy of crystalline substances at absolute zero going by the third law of thermodynamics should be taken as
Anonymous Quiz
3%
100
6%
50
81%
Zero
10%
Different for different substances
Which one of the following is always not negative
Anonymous Quiz
19%
Enthalpy of combustion
41%
Enthalpy of formation
19%
Enthalpy of neutralisation
22%
Hydration Enthalpy
The positive value of ∆S indicates that
Anonymous Quiz
12%
The system becomes less disordered
70%
The system becomes more disordered
9%
The system is in equilibrium position
9%
The system tends to reach at equilibrium position
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1. In majority of dicotyledonous plants, the direct elongation of the_______ leads
Anonymous Quiz
8%
Cotyledon
16%
Secondary root
23%
Plumule
54%
Radicle