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1 PUC Chemistry Objective Question Paper for Students
Which chlorine oxide is commonly used as a bleaching agent for paper, textiles, and in water treatment?
a) Cl₂O
b) ClO₂
c) Cl₂O₆
d) Cl₂O₇
Option b – ClO₂
…… A …… is employed for the estimation of carbon monoxide. Here, A represents:
a) I₂O₅
b) I₂O₇
c) BrO₂
d) BrO₃
Option a – I₂O₅
Which of the following statements about chlorine is correct?
a) Chlorine is a greenish-yellow gas.
b) It has a pungent and suffocating smell.
c) Its density is about 2–5 times that of air.
d) All of the above
Option d – All of the above
Chlorine is applied in
a) Extraction of gold and platinum
b) Bleaching of wood pulp
c) Disinfection of drinking water
d) All of the above
Option d – All of the above
Uses of hydrochloric Acid (HCl) include
a) Production of chlorine and glucose
b) Extraction of glue from bones and purification of bone ash
c) Use in medicine and laboratory applications
d) All of the above
Option d – All of the above
Slaked lime reacts with chlorine to produce
a) Ca(OCl)₂
b) Ca(OCl)Cl
c) Ca(ClO₃)₂
d) CaCl₂
Option b – Ca(OCl)Cl
Iodine gives a blue color with
a) C₂
b) F₂
c) Starch solution
d) FeCl₃ solution
Option c – Starch solution
Fluorine reacts with cold dilute NaOH to give
a) NaF and O₂
b) NaF and OF₂
c) NaF and H₂O₂
d) NaF, H₂O₂, and F₂O
Option b – NaF and OF₂
Iodine reacts with hot concentrated NaOH to yield
a) NaI + NaOI + O₂
b) NaI + HIO + O₃
c) NaI + NaIO₃ + H₂O
d) NaI + HIO₃ + H₂O
Option c – NaI + NaIO₃ + H₂O
Which halogen oxoacid has the highest oxidizing power?
a) HClO₃
b) HClO
c) HClO₄
d) HClO₂
Option c – HClO₄
The increasing order of Acid strength for chlorine oxoacids is
a) HClO₄ < HClO < HClO₂ < HClO₃
b) HClO₃ < HClO₂ < HClO₄ < HClO
c) HClO₄ < HClO₃ < HClO₂ < HClO
d) HClO₄ < HClO₂ < HClO < HClO₃
Option c – HClO₄ < HClO₃ < HClO₂ < HClO
The number of Cl–O bonds in Cl₂O₇ is
a) 7
b) 8
c) 6
d) 10
Option b – 8
Which oxide is produced when Cl₂ reacts with HgO at 300°C?
a) ClO₂
b) Cl₂O₅
c) Cl₂O₃
d) Cl₂O
Option d – Cl₂O
The Acid used for etching glass is
a) H₂SO₄
b) HClO₄
c) HF
d) Aqua regia
Option c – HF
Which compound is referred to as oxy-muriatic Acid?
a) HCl
b) Cl₂
c) HBr
d) HF
Option b – Cl₂
Chlorine gas is generated when dilute HCl is treated with
a) KMnO₄
b) MnO₂
c) K₂Cr₂O₇
d) All of the above
Option d – All of the above
The hybridization of bromine in BrF₅ is
a) sp³d
b) sp³d²
c) sp³
d) dsp²
Option b – sp³d²
The increasing order of reducing power of halogen Acids is
a) HF < HCl < HBr < HI
b) HF < HBr < HCl < HF
c) HBr < HCl < HF < HI
d) HCl < HBr < HF < HI
Option a – HF < HCl < HBr < HI
We covered all the 1 PUC Chemistry question paper above in this post for free so that you can practice well for the exam.
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Also, check out:
- SSLC Chemistry Chapter wise Questions and Answers
- Plus One Chemistry Important Questions and Answers
- Laxmi Publications Chemistry Class 12
