10 dm³ of N2 gas and 10 dm³ of gas X at the same temperature contains the same number of molecules. The gas X is
Anonymous Quiz
19%
Co
39%
Co2
36%
H2
7%
H2O
🥰1
🥰4
Number of grams of oxj^gen in 32.2 g Na2SO4.10 H2O is
Anonymous Quiz
14%
22.2
54%
22.4
24%
22.6
8%
22.8
🥰2👍1
aqueous solution of 6.3 g of oxalic acid dihydrate is made upto 250 ml. The volume of 0.1 N NaOH required to completely neutralise 10 ml of this solution is
Anonymous Quiz
22%
40
49%
20
16%
10
13%
14
🥰3🤩1
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Wave picture of light failed to explain.
Anonymous Quiz
32%
The photoelectric
38%
The polarization
25%
Differaction
5%
Interferaence
👍1
Which is the strongest fundamental force of nature?
Anonymous Quiz
47%
Gravation force
15%
Waek nuclear force
19%
Strong nucleus force
19%
Electromagnetic force
🥰2
Which of these were not major technological advances during industrial revolution in England and Europe?
Anonymous Quiz
10%
Power loom
38%
The cotton gin
31%
Stream engine
22%
Satellite communications
🥰2
Which scientist does not belong to Germany?
Anonymous Quiz
14%
Henirich hertz
35%
Vasco digma
25%
Robert hook
26%
Neil bhor
🤩1
According to Einstein’s theory, mass and energy are related as
Anonymous Quiz
32%
E=mc
24%
E=m/c^2
37%
E=mc^2
8%
E=m/c
😁5
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🔥2
The increasing order (lowest first) for the values of e/m (charge/mass) for
Anonymous Quiz
19%
N,p,e,a
36%
P,e,n,a
40%
N ,a,p,e
6%
N,e,a,p
🥰2
A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at:
Anonymous Quiz
8%
518
42%
1035
33%
325
17%
743
😁1
Which of the following element has least number of electrons in its M-shell?
Anonymous Quiz
33%
K
33%
Mn
21%
Ni
13%
Si
🤩3
In the ground state, an element has 13 electrons in its M-shell. The element is_____
Anonymous Quiz
15%
Copper
45%
Chromium
24%
Nickel
16%
Iron
🤩3👍1
In the Bohrs model of the hydrogen atom, the ratio of the kinetic energy to the total energy of the electron in a quantum state n is:
Anonymous Quiz
20%
1
48%
-1
29%
2
3%
-2
👍1🥰1
😁4😢4👍2