TS Polycet (Polytechnic) 2015 Previous Question Paper with Answers And Model Papers With Complete Analysis


Section – III
CHEMISTRY

Q). 6.023 x 1022 molecules of N2 at STP will occupy a volume of
A) 22.4 litres
B) 2.24 litres
C) 6.02 litres
D) 14 litres

View Answer
B) 2.24 litres

Q). For the reaction A + 2B → C, 5 moles of A and 8 moles of B will produce
A) 5 moles of C
B) 4 moles of C
C) 8 moles of C
D) 13 moles of C

View Answer
B) 4 moles of C

Q). If a solution turns blue litmus to red, then its pH is likely to be
A) 5
B) 8
C) 10
D) 12

View Answer
A) 5

Q). When Zn is added to aqueous NaOH and on heating it forms
A) ZnO
B) Na2ZnO2
C) O2
D) Na2O

View Answer
B) Na2ZnO2

Q). Which one of the following is an acid?
A) Nacl
B) Ca(OH) 2
C) HNO3
D) NaNO3

View Answer
C) HNO3

Q). The chemical formula of Plaster of Paris is
A) A) CuSO4. 5H2O
B) CaSO4. H2O
C) CuSO4. ½ H2O
D) CaSO4. ½ H2O

View Answer
D) CaSO4. ½ H2O

Q). The orbital which does not-lie along the axis is
A) PX
B) dX2 y2
C) dXy
D) py

View Answer
C) dXy

Q). Which one of the following has the electronic configuration of ls22s22p6?
A) Ne
B) Na+
C) F
D) All

View Answer
D) All

Q). When an electron jumps from higher orbit to lower orbit in an atom, the energy is
A) absorbed
B) emitted
C) not changed
D) Depends on atom

View Answer
B) emitted

Q). Magnetic quantum number of the last electron of the sodium is
A) 3
B) 2
C) 1
D) 0

View Answer
D) 0

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