TS Polycet (Polytechnic) 2016 Previous Question Paper with Answers And Model Papers With Complete Analysis

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Section — III
CHEMISTRY

91)The chemical formula of limestone is

A) Ca(OH)2

B) CaCO3

C) CaO

D) Ca(NO)3

View Answer

B) CaCO3
92)What is the colour of the gas evolved by heating lead nitrate?

A) Brown

B) Pink

C) White

D) Black

View Answer

A) Brown
93)The weight of one mole of table salt is

A) 35.5 g

B) 58.5 g

C) 23 g

D) 40 g

View Answer

B) 58.5 g
94)Which of the following is an example of photochemical reaction?

A) 2AgBr→ 2Ag + Br2

B) Zn + 2HCl → ZnCl2 + H2

C) 2H2O → 2H2 + O2

D) CaCO3 → CaO + CO2

View Answer

A) 2AgBr→ 2Ag + Br2
95)Which of the following solutions gives yellow colour with methyl orange indicator?

A) NaOH

B) CH3COOH

C) HCl

D) H2SO4

View Answer

A) NaOH
96)Which of the following compounds is used in glass, paper and soap industry?

A) Washing soda

B) Baking soda

C) Calcium hydroxide

D) Plaster of Paris

View Answer

A) Washing soda
97)The formula of sodium zincate is

A) 2NaZnO

B) Na2ZnO2

C) NaZnO2

D) NaZnO

View Answer

B) Na2ZnO2
98)Which of the following bases is used in antacids?

A) Ca(OH)2

B) NaOH

C) Mg(OH)2

D) NH4OH

View Answer

C) Mg(OH)2
99)Which of the following elements belongs tod-block?

A) Cl

B) Cr

C) Sr

D) Ar

View Answer

B) Cr
100)”No two electrons in an atom have the same set of four quantum numbers.” This rule was stated by

A) Pauli

B) Aufbau

C) Hund

D) Bohr

View Answer

A) Pauli
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