List of top Chemistry Questions asked in AP EAPCET

Which of the following is the common monomer for the polymers Bakelite and Melamine?
A polymer sample contains 10 molecules each with molecular mass 5,000 and 5 molecules each with molecular mass 50,000. The number average molecular mass of the polymer sample is

Match the following polymers with their applications:

Identify the correct set from the following:
Novolac is formed by the polymerisation of monomer 'x' in the presence of OH– ions. What is 'x'?
Consider the following:
Statement-I: Nylon 6 is a condensation copolymer.
Statement-II: Nylon 6,6 is a condensation polymer of adipic acid and tetramethylene diamine.
The correct answer is
The correct statement regarding X and Y in the following set of reactions is
Match the following polymers with their applications: \begin{center} \begin{tabular}{|c|c|} \hline List-I (Polymer) & List-II (Used in making)
\hline
The correct statement regarding X and Y in the following set of reactions is
Which of the following represents the correct structure of \( \beta\text{-}D\text{-}(-)\text{-} \) Fructofuranose?

Match the following:
List-I (Process)
A. Hall-Heroult process
B. Mond process
C. Van-Arkel process
D. Zone refining process
List-II (Metal)
I. Ti
II. In
III. Al
IV. Ni

Which of the following methods is useful for producing semiconductor grade metals of high purity?
In the structure of diborane, the number of 2-centre-2-electron bonds is X and 3-centre-2-electron bonds is Y. The value of (X + Y) is:
Which of the following is used as froth stabilizer in froth floatation process?
Identify the reaction in which diborane is produced on an industrial scale:
Kaolinite, a form of clay is the ore of metal X and malachite is the ore of metal Y. X and Y respectively are:
In the extraction of which of the following metals, the ore is concentrated by leaching process?
I) Ag
II) Au
III) Zn
IV) Al
The ore, concentrated by froth floatation process is:
Copper matte mainly contains
Consider the following statements:
Statement-I: The order of electronegativity of B, Al, In, Tl is \(B>Tl>Al>In\)
Statement-II: Boric acid is a weak protic acid
Consider the following Statement-I : \( \text{Al}_2\text{O}_3 \) is amphoteric in nature. Statement-II : \( \text{Tl}_2\text{O}_3 \) is more basic than \( \text{Ga}_2\text{O}_3 \). The correct answer is
Which of the following sets are correctly matched?
I) Hg — distillation
II) Cu — poling
III) B — zone refining
IV) Ti — liquation
Consider the following: Statement-I: In the extraction of Al by Hall-Heroult process, pure \( Al_2O_3 \) mixed with \( Na_3AlF_6 \) lowers its melting point and increases conductivity. Statement-II: Zirconium metal is purified by zone refining method. The correct answer is:
Identify the reaction in which diborane is produced on an industrial scale:
Consider the following: Statement-I: In the extraction of Al by Hall-Heroult process, pure \( Al_2O_3 \) mixed with \( Na_3AlF_6 \) lowers its melting point and increases conductivity. Statement-II: Zirconium metal is purified by zone refining method. The correct answer is: