The nature of electromagnetic waves is

Which of the following species can act as a reducing agent?

If the slope of one of the lines given by $ax^2+2hxy+by^2=0$ is two times the other,then:

What does the given diagram of enzyme action represent?

The length of an elastic string is $a$ metres when the longitudinal tension is $4 \ N$ and $b$ metres when the longitudinal tension is $5 \ N$. The length of the string in metres when the longitudinal tension is $9 \ N$ is

$A$ $0.001 \, \text{molal}$ solution of $[Pt(NH_3)_4Cl_4]$ in water shows a freezing point depression of $0.0054 \, ^circ C$. If $K_f$ for water is $1.80$,the correct formulation of the above compound is?