The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 2nd group and the 4th period?
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Benzene is ______ in ethyl alcohol.
Which was not produced by volcanic outgassing?
In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.
Extreme or indefinite to be adequately described.
The latitudes of main land of India extends between __________.
The demand of a commodity is a direct demand but the demand of a factor of production is called a
If the resistance of a conductor is reduced to half its initial value, then the heating effect in the conductor will become ___.
The outer most layer of the Sun is known as--
The corona is the outermost layer of the Sun, starting at about 1300 miles (2100 km) above the solar surface (the photosphere)
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