Chemistry-
General
Easy
Question
[Ar]3d6 is the configuration of the following ion
- Fe+2
- Ti+3
- Co+2
- Cr+3
The correct answer is: Fe+2
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The atomic size is nearly:
The atomic size is nearly:
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Energy of electron in 2nd Bohr orbit of H-atom is:
Energy of electron in 2nd Bohr orbit of H-atom is:
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For any anion X–3,the mass number is14.If anion have10electron,then number of neutron in X2nucleus:
For any anion X–3,the mass number is14.If anion have10electron,then number of neutron in X2nucleus:
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Ground state electronic configuration of Cu+2 (Z=29) is-
Ground state electronic configuration of Cu+2 (Z=29) is-
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The nitrogen atom has 7 proton, so the nitride ion will have:
The nitrogen atom has 7 proton, so the nitride ion will have:
chemistry-General
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In Measuring the values of resistance, different students connect ammeter and voltmeter as shown in following figures. Which of these will be correct ?
i) 
ii) 
In Measuring the values of resistance, different students connect ammeter and voltmeter as shown in following figures. Which of these will be correct ?
i)
ii)
physics-General
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Wave number of Ist line of Balmer series is15200cm-1 for H atom, then wave number of Ist line of Balmer series for Li+2 is:
Wave number of Ist line of Balmer series is15200cm-1 for H atom, then wave number of Ist line of Balmer series for Li+2 is:
chemistry-General
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Species which are isoelectronic to one another are-
a)CN–
b)OH–
c) CH+3
d)N2 Correct Ans:
Species which are isoelectronic to one another are-
a)CN–
b)OH–
c) CH+3
d)N2 Correct Ans:
chemistry-General
physics-
The figure shows the variation of ‘V’ with ‘i’ at temperatures T1 and T2 Then 
is proportional to
The figure shows the variation of ‘V’ with ‘i’ at temperatures T1 and T2 Then is proportional to
physics-General
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V-i graphs of anichrome wire at three different temperatures t1 t2, and t3 are shown. from the graph,
V-i graphs of anichrome wire at three different temperatures t1 t2, and t3 are shown. from the graph,
physics-General
physics-
If each of the resistances in the network in figure R, the equivalent resistance between terminals A and B is
If each of the resistances in the network in figure R, the equivalent resistance between terminals A and B is
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Which of these is r represented by the configuration [Kr]5s2 :
Which of these is r represented by the configuration [Kr]5s2 :
chemistry-General
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The order of size of nuclei of an atom is:
The order of size of nuclei of an atom is:
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Difference between Cl atom and Cl– ion is of:
Difference between Cl atom and Cl– ion is of:
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biology
What is true about T-lymphocytes in mammals :
What is true about T-lymphocytes in mammals :
biologyGeneral
