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Logic: 1. First and second letter → (2) is added to the position value according to the English alphabetic series. 2. Third and fourth letter → (2) is subtracted from the position value according to the English alphabetic series.
Alkali metals have ______.
I. low melting points
II. low densities
Which of the following is used as a moderator in nuclear reactors?
Which of the following alkali metals has the highest specific heat?
Which of the following is also known as wood alcohol?
Acid reacts with metal to form salt and liberates _________ gas.
The conversion of hard water into soft water by boiling or adding calcium hydroxide is called:
In which form is iron ore primarily found in nature?
How many planets are terrestrial planets?
What is the viscosity of an ideal fluid?
To prevent heart problems, blood of a normal healthy person should have
