For the following questions answer them individually
Which transition in the hydrogen spectrum would have the same wavelength as the Balmer type transition from n = 4 to n = 2 of He$$^+$$ spectrum
The correct increasing order of the ionic radii is
Match List I with List II
List I   List II
A. XeF$$_4$$   I. See-saw
B. SF$$_4$$   II. Square planar
C. NH$$_4^+$$   III. Bent T-shaped
D. BrF$$_3$$   IV. Tetrahedral
Choose the correct answer from the options given below:
$$H_2O_2$$ acts as a reducing agent in
Match items of column I and II
Choose the correct set of reagents for the following conversion
trans Ph - CH = CH - CH$$_3$$ $$\rightarrow$$ cis Ph - CH = CH - CH$$_3$$
Which one of the following statements is correct for electrolysis of brine solution?
Adding surfactants in non polar solvent, the micelles structure will look like
(a)

(b)

(c)

(d)
The methods NOT involved in concentration of ore are
(A) Liquation
(B) Leaching
(C) Electrolysis
(D) Hydraulic washing
(E) Froth floatation
Choose the correct answer from the options given below:
Identify X, Y and Z in the following reaction. (Equation not balanced)
$$ClO^. + NO_2 \rightarrow X \xrightarrow{H_2O} Y + Z$$