Which of the following elements exhibits oxidation states other than \(+3 ?\)

Which following pair of elements does NOT represent chemical twins?

The integrated rate equation for first order reaction, $A\to$ product, is

Which from following molecules serves as fibrous content of food only and useful for bowel movement in humans?

Identify reducing agent used for the following conversion.
\(\mathrm{R}-\mathrm{CHO} \rightarrow \mathrm{R}-\mathrm{CH}_2-\mathrm{OH}\)

When phenol reacts with dilute nitric acid at room temperature, the major product obtained is

Calculate the volume of unit cell when metal having density \(1 \mathrm{~g} \mathrm{~cm}^{-3}\) and molar mass \(23 \mathrm{~g} \mathrm{~mol}^{-1}\) crystallises to form bce structure.

If \(\overline{\mathrm{a}}, \overline{\mathrm{b}}, \overline{\mathrm{c}}\) are non-coplanar vectors and \(\overline{\mathrm{p}}=\frac{\overline{\mathrm{b}} \times \overline{\mathrm{c}}}{[\overline{\mathrm{a}} \overline{\mathrm{b}} \overline{\mathrm{c}}]}, \overline{\mathrm{q}}=\frac{\overline{\mathrm{c}} \times \overline{\mathrm{a}}}{[\overline{\mathrm{a}} \overline{\mathrm{b}} \overline{\mathrm{c}}]}, \overline{\mathrm{r}}=\frac{\overline{\mathrm{a}} \times \overline{\mathrm{b}}}{[\overline{\mathrm{a}} \overline{\mathrm{b}} \overline{\mathrm{c}}]}, \quad\) then \(2 \overline{\mathrm{a}} \cdot \overline{\mathrm{p}}+\overline{\mathrm{b}} \cdot \overline{\mathrm{q}}+\overline{\mathrm{c}} \cdot \overline{\mathrm{r}}=\)

Which among the following is dicarboxylic acid?

Which one of the following Indian institution got the U.S. patent cancelled for haldi (turmeric)?

What type of bonds are present in molecular crystals?

Which among the following is a negatively charged sol?

Which of the following is Lewis base?