Bank Exams Questions

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Which pair of atoms has the highest electronegativity difference?

(Calcium's electronegativity is 1.0

Fluorine's electronegativity is 4.0

Hydrogen's electronegativity is 2.2

Sodium's electronegativity is 0.93)

Select the antonym of

apocalypse

Select the antonym of

affidavit

Which of the following reactions are exothermic?

$$\begin{gathered} 1) C + O2 → CO2 \\ 2) 2Mg + O2 → 2MgO \\ 3) CuSO4 + 5H2O → CuSO4.5H2O \\ 4) All the above \end{gathered}$$

Which word or words explains the meaning of the following idioms:-

A fool’s errand

Select the antonym of

cameo

If 20% of a = b, then b% of 20 is the same as :

Select the synonym of

alleviate