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961 × 4 ÷ 31 – 15% of 180 = ? – 73 => 124 – 27 = ? – 343 => ? = 97 + 343 => ? = 440
What is the colour of the outer zone of complete combustion of candle flame?
What happens when one s orbital and one p orbital hybridize?
Rod of which of the following metal is used in nuclear reactors to slow down the speed of the neutrons?
Which type of bond is formed by the sharing of electrons?
Which of the following is not a natural polymer?
The device that converts AC into DC is:
If water smells bad, then that odor can be removed by adding:
Which metal remains liquid at room temperature?
Name the source from which aspirin is produced?
_______ is a common name of ethanoic acid.