Question 11 Mark
Write the name of interhalogen compound of chlorine which has square pyramidal structure.
Answer
View full question & answer→Cooming soon
Questions
Answer the following questions:
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Question 21 Mark
Given reason: Bleaching action of ozone is also called dry bleach.
Answer
View full question & answer→Bleaching action of ozone is also called dry bleach because ozone bleaches in the absence of moisture.
Question 31 Mark
Write the chemical composition of cryolite.
Answer
View full question & answer→Cryolite is Na3AlF6 and its chemical name is Sodium aluminium fluoride.
Question 41 Mark
What is the action of selenium on magnesium metal ?
Answer
View full question & answer→$Mg + Se \longrightarrow \underset{\text { (Magnesium selenide) }}{ MgSe }$
Magnesium selenide is formed when selenium reacts with magnesium metal.
Magnesium selenide is formed when selenium reacts with magnesium metal.
Question 51 Mark
Write balanced chemical equations for the following:
Action of ozone on hydrogen peroxide.
Action of ozone on hydrogen peroxide.
Answer
View full question & answer→Balanced equations:
$H _2 O _2+ O _3 \longrightarrow H _2 O +2 O _2$
$H _2 O _2+ O _3 \longrightarrow H _2 O +2 O _2$
Question 61 Mark
Write resonating structures of ozone.
Question 71 Mark
Write the name of an inert gas element used in the treatment of cancer by radiotherapy.
Answer
View full question & answer→Cobalt-60 is a radioactive isotope used in the treatment of cancer.
Question 81 Mark
Write structure and molecular formula for sulphurous acid.
Answer
View full question & answer→Molecular formula: $H_2SO_3$
Structural formula:
Structural formula: