With reference to vitamins and its deficiency diseases, the correct statements are:
(i) Cheilosis is due to the deficiency of Riboflavin
(ii) The deficiency of Vitamin B6 causes pernicious anaemia
(iii) Osteomalacia is due to the deficiency of Vitamin E
(iv) The deficiency of ascorbic acid causes scurvy
(v) The deficiency of Vitamin A causes xerophthalmia

The concentration of electrolyte required to coagulate a given amount of \(\mathrm{As}_{2} \mathrm{S}_{3}\) sol is minimum in the case of

Which of the following noble gases has the highest van der Waals' force of attraction?

The mass of hydrogen in gram required to completely saturate 1 mole of triolein is

Identify the correct statement regarding corrosion of iron rod left exposed to atmosphere.

Two statements, Assertion and Reason are given below. Choose the correct option.
Assertion: n-propyl tert-butyl ether can be readily prepared in the laboratory by Williamson's synthesis.
Reason: The reaction occurs by \(\mathrm{S}_{\mathrm{N}} 1\) attack of Primary alkoxide on Tert-alkyl halide to give good yield of the product, n-propyl tert-butyl ether.

In acetylene molecule, between the carbon atoms there are

The area in square units of the region bounded by \(y^{2}=9 x\) and \(y=3 x\) is

In a Young's double slit experiment, the two interfering waves forming the interference pattern have the same amplitude. The phase difference between the two waves reaching a point X is \(\dfrac{\pi}{3}\). What will be the phase difference between the two waves at a point Y if the intensity ratio at X and Y is \(3: 2\) ?

Two polaroid \(A\) and \(B\) are kept with their transmission axes at an angle \(\theta\) with respect to one another. If the transmitted intensity of light \(I_{t}=0.75 I_{0}\), where \(I_{0}\) is the intensity of light incident on the system, then \(\theta\) is

Quadrilateral PQRS is inscribed inside a rectangle of dimensions \(10 \mathrm{~cm} \times 8 \mathrm{~cm}\). The value of ' \(x\) ', if the area of the quadrilateral is minimum is

A stone dropped from the top of the tower reaches ground in \(4 \mathrm{~s}\). Height of the tower is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

Which one of the following structures in Column I does not have the correct IUPAC name as given in Column II.
\(\begin{array}{|c|l|l|} \hline \text { S.No. } & \text { Structure } & \text { IUPAC name. } \\ \hline \text { A } & {\left[\mathrm{CoBr} r_2(\mathrm{en})_2\right] \mathrm{Cl}} & \text { Dibromidodi-( ethan-1, 2 - diamine)cobalt (III) chloride } \\ \hline \text { B } & \mathrm{Na}\left[\mathrm{PtBrCl}\left(\mathrm{NO}_2\right)\left(\mathrm{NH}_3\right)\right] & \text { Sodium amminebromidochloridonitrito- N- palatinate(II) } \\ \hline \text { C } & {\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_2\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}\right] \mathrm{SO}_4} & \text { Tetraamminediaquachloridochromium (III) sulphate. } \\ \hline \text { D } & {\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_4\right]\left[\mathrm{PtCl}_4\right]} & \text { Tetraammineplatinum (II) tetrachloridoplatinate (II) } \\ \hline \end{array}\)