Question
Who proposed the 'Law of Octaves' in the periodic
classification of elements?Solution
The 'Law of Octaves' was proposed by John Newlands in 1865. According to this law, elements arranged in increasing order of atomic weights exhibit similar properties at every eighth element.
Which two signs should be interchanged to make the given equation correct?
912 – 456 × 28 + 390 ÷ 2 = 444
What should come in place of the question mark (?) in the given series?
42, 48, 54, 60, 66, ?
Select correct combination of mathematical signs to sequentially replace the letter Y and balance the following equation.
52 Y 13 Y 16 Y 32 Y 2
Which of the following numbers will replace the question mark (?) in the given series?
90, 110, 132, ? , 182
From the given option figures, select the one in which the question figure is hidden/embedded. (Rotation is NOT allowed)
Select the term that will come next in the following series.
A12B, D15E, G18H, J21K, ?
In a code language, 'COUCH' is coded as FLXZK and 'TABLE' is coded as WXEIH. How will 'CHAIR' be coded in the same language?
In a code language, 'PALM' is coded as 16-1-12-13 and 'HEAD' is coded as 8-5-1-4. How will 'NECK' be coded in the same language?
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance...
How many pages of book Z did Sania read on Sunday?
Statement 1 – The book has 300 pages out of which two-thirds were read by her before Sunday<...
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