Find the best tutors and institutes for Class 12 Tuition

Find Best Class 12 Tuition

Please select a Category.

Please select a Locality.

No matching category found.

No matching Locality found.

Outside India?

Search for topics

Class 12 Tuition Updates

Ask a Question

Post a Lesson

Answered on 05 Jan CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements CBSE/Class 11/Science/Chemistry

Write balanced equations for: read more
Write balanced equations for:
cbse-class-11th-chemistry-chapter-11-p-block-elements-14 read less

B Rahul

ty
Answers 1 Comments
Dislike Bookmark

Answered on 02 Jan CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements CBSE/Class 11/Science/Chemistry

Give one method for industrial preparation and one for laboratory preparation of CO and C02 each. read more
Give one method for industrial preparation and one for laboratory preparation of CO and C02 each. read less

Eshvi R.

Method for CO: Incomplete oxidation of Carbon in limted air. Method for CO2: Burn carbon in excess of air. read more

Method for CO: 

Incomplete oxidation of Carbon in limted air.

Method for CO2:

Burn carbon in excess of air.

read less
Answers 1 Comments
Dislike Bookmark

Answered on 05 Jan CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements CBSE/Class 11/Science/Chemistry

Elements of group 14 (a) exhibit oxidation state of +4 only (b) exhibit oxidation state of +2 and +4... read more
Elements of group 14
(a) exhibit oxidation state of +4 only (b) exhibit oxidation state of +2 and +4
(c) form M2-and M4+ ion (d) form M2+ and M4+ ions. read less

Malus Coaching Classes

The elements of group 14 have 4 electron’s in the outermost shell i.e valence shell hence the oxidation state of the group is +4 As the result of the inert pair effect the lower oxidation state becomes more and more stable and opposite things happen on the other hand the highest oxidation state... read more

The elements of group 14 have 4 electron’s in the outermost shell i.e valence shell hence the oxidation state of the group is +4

As the result of the inert pair effect the lower oxidation state becomes more and more stable and opposite things happen on the other hand the highest oxidation state becomes less and less stable

Therefore the group has oxidation state from +4 to +2

C (carbon) = oxidation state +4
Si (silicon) = oxidation state +4
Sn, Pb (lead) = oxidation state +2,+4

 

read less
Answers 2 Comments
Dislike Bookmark

Looking for Class 12 Tuition

Find best Class 12 Tuition in your locality on UrbanPro.

FIND NOW

Answered on 05 Jan CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements CBSE/Class 11/Science/Chemistry

If the starting material for the manufacture of silicons is RSiCl3 write the structure of the product formed. read more
If the starting material for the manufacture of silicons is RSiCl3 write the structure of the product formed. read less

Malus Coaching Classes

Answers 2 Comments
Dislike Bookmark

Answered on 02 Jan CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements CBSE/Class 11/Science/Chemistry

Is boric acid a protonic acid? Explain.

Bansal Classes Private Limited

Protonic acid is an acid which ionizes in solution and produces protons. But in the case of boric acid, it takes electrons which were produced due to the ionisation of water.
Answers 1 Comments
Dislike Bookmark

Answered on 05 Jan CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements CBSE/Class 11/Science/Chemistry

Rationalise the given statements and give chemical reactions: Lead (II) chloride reacts with Cl2... read more

  • Rationalise the given statements and give chemical reactions:
  • Lead (II) chloride reacts with Cl to give PbCl.
  • Lead (IV) chloride is highly unstable towards heat.
  • Lead is known not to form an iodide Pbl4. read less

Nitish

Answer is explained on the basis of inert pair effect. this is observed in p-block, on movind down the group in p-block because of poor sheilding of d & f electrons in inner shells of element ns2 electrons strongly attracted by nucleus and do not participate in chemical reaction and so Pb2+ is... read more

Answer is explained on the basis of inert pair effect.

this is observed in p-block, on movind down the group in p-block because of poor sheilding of d & f electrons in inner shells of element ns2 electrons strongly attracted by nucleus and do not participate in chemical reaction and so

Pb2+ is more stable than Pb4+

read less
Answers 1 Comments
Dislike Bookmark

Looking for Class 12 Tuition

Find best Class 12 Tuition in your locality on UrbanPro.

FIND NOW

Answered on 05 Jan CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements CBSE/Class 11/Science/Chemistry

Explain the following reactions. (a) Silicon is heated with methyl chloride at high temperature in the... read more
Explain the following reactions.
(a) Silicon is heated with methyl chloride at high temperature in the presence of copper.
(b) Silicon dioxide is treated with hydrogen fluoride.
(c) CO is heated with ZnO.
(d) Hydrated alumina is treated with aqueous NaOH solution. read less

Malus Coaching Classes

(a) When silicon reacts with methyl chloride in the presence of copper (catalyst) and at a temperature of about 537 K, a class of organosilicon polymers called methyl-substituted chlorosilanes are formed. Examples, (b) When silicon dioxide ( ) is heated with hydrogen fluoride (HF), it forms silicon... read more

(a) When silicon reacts with methyl chloride in the presence of copper (catalyst) and at a temperature of about 537 K, a class of organosilicon polymers called methyl-substituted chlorosilanes are formed. Examples,  

14360293467606.jpg

(b) When silicon dioxide ( ) is heated with hydrogen fluoride (HF), it forms silicon tetrafluoride ( ). Usually, the Si-O bond is a strong bond and it resists any attack by halogens and most acids, even at a high temperature. However, it is attacked by HF.

The formed in this reaction can further react with HF to form hydrofluorosilicic acid.

(c) When CO reacts with ZnO, it reduces ZnO to Zn. CO acts as a reducing agent.

(d) When hydrated alumina is added to sodium hydroxide, the former dissolves in the latter because of the formation of sodium meta-aluminate.

 

read less
Answers 1 Comments
Dislike Bookmark

Answered on 02 Jan CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements CBSE/Class 11/Science/Chemistry

Give reasons: (i) Cone. HNO3 can be transported in aluminium container. (ii) A mixture of dilute NaOH... read more
Give reasons:
(i) Cone. HNO3 can be transported in aluminium container.
(ii) A mixture of dilute NaOH and aluminium pieces is used to open drain.
(iii) Graphite is used as lubricant.
(iv) Diamond is used as an abrasive.
(v) Aluminium alloys are used to make aircraft body.
(vi) Aluminium utensils should not be kept in water overnight.
(vii) Aluminium wire is used to make transmission cables. read less

Ramakrishna Dhooli

Tutor

Because--- 1)HNO3 can not react with Al. 3)The structure of Graphite contains hexagonal layers,which are slippery in nature. Hence it is used as lubricant. 4)Diamond is the hardest material, it is less wear & tear nature,hence used for cutting & sharpening(abrasive) of metals. 5)Alluminium... read more

Because---

1)HNO3  can not react with Al.

3)The structure of Graphite contains hexagonal layers,which are slippery in nature.

Hence it is used as lubricant.

4)Diamond is the hardest material, it is less wear & tear nature,hence used for cutting & sharpening(abrasive) of metals.

5)Alluminium is light in weight but strong metal

7) Aluminium wire is used to make transmission cables because

     It is a good conductor of electricity,it is ductile and cheaper compared to copper,silver etc.

read less
Answers 1 Comments
Dislike Bookmark

Answered on 05 Jan CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements CBSE/Class 11/Science/Chemistry

ketch the structure of two allotropes of carbon namely diamond and graphite. read more
ketch the structure of two allotropes of carbon namely diamond and graphite. read less

Malus Coaching Classes

read more

Image result for sketch the structure of two allotropes of carbon namely diamond and graphite.

 

read less
Answers 1 Comments
Dislike Bookmark

Looking for Class 12 Tuition

Find best Class 12 Tuition in your locality on UrbanPro.

FIND NOW

Answered on 05 Jan CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements CBSE/Class 11/Science/Chemistry

What is the impact of structure on physical properties of two allotropes? read more
What is the impact of structure on physical properties of two allotropes? read less

Nitish

If two allotropes of same element has different structure.it means they have different force of attraction between their molecules and different bonding tendency, which results in different physical properties. Example : diamond and graphite one has three dimensional cross linked structure while other... read more

If two allotropes of same element has different structure.it means they have different force of attraction between their molecules and different bonding tendency, which results in different physical properties. Example : diamond and graphite one has three dimensional cross linked structure while other has layered structure.diamond is hard while graphite is soft

read less
Answers 1 Comments
Dislike Bookmark

About UrbanPro

UrbanPro.com helps you to connect with the best Class 12 Tuition in India. Post Your Requirement today and get connected.

Overview

Questions 98

Total Shares  

+ Follow 84 Followers

Top Contributors

Connect with Expert Tutors & Institutes for Unit 11-Some p -Block Elements

x

Ask a Question

Please enter your Question

Please select a Tag

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 25 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 6.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more