Which of the following is not associated with water molecules ?
Cryolite
Bauxite
Kernite
Borax
Identify the incorrect statement about silica.
It is acidic in nature.
It has no reaction with most of acids except HF.
With NaOH it forms sodium silicate.
Like graphite, it has two dimensional structure.
Which one of the following statements related to photochemical smog is not correct?
It is controlled by the use of catalytic converters in automobiles.
It causes corrosion of metals.
It is a mixture of $\mathrm{SO}_2$, smoke and fog.
It causes extensive damage to plant life.
In compound $(X)$, hyperconjugation is present and in $(Y)$, resonance effect is present. What are $X$ and $Y$, respectively?
Toluene, prop-2-en-1-ol
Aniline, 2-propenal
Toluene, nitrobenzene
1-bromopropane, phenol
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