The shape of methane (CHâ‚„) molecule is:
Before X-ray examination (coloured X-ray) of the stomach, patients are given suitable salt of barium becauseÂ
Which of the following isotope of uranium is used as a nuclear-fuel in reactors?
Which of the following is not a physical change?
A wire is bent into a circular loop. If current is passed through it, which one of the following statements is valid?
The PH of an aqueous solution of a salt is 4.5. Which of the following about this salt is true?
What is the function of the red blood cells?
Which of the following two chemical reactions are involved in the corrosion of the iron metal?
Division of Agricultural Meteorology at Pune was established in:
In Egypt, ancient mummies can be found to have their arteries intact due to well-preserved
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