Sample paper chemistry

Sample Paper
Class 11 Chemistry
Sample Paper 5 | Class 11 Chemistry

CLASS XI

CHEMISTRY

SAMPLE PAPER-5

Max. Marks – 70 Time allowed: 3 hours

General Instructions:

(i) All the questions are compulsory.

(ii) Question Paper contains four sections.

(iii) Section A has 6 questions carrying one mark each.

(iv) Section B has 8 questions carrying two marks each.

(v) Section C has 6 questions carrying three marks each.

(vi) Section D has 6 questions carrying five marks each.

(vii) Use log tables for calculations if necessary.

Section - A

Question 1:

Methane does not react with chlorine in the dark. Why?

Question 2:

What is the effect of CFC’s on the ozone layer?

Question 3:

What is 1 molal solution?

Question 4:

What is the threshold frequency?

Question 5:

Define dipole moment.

Question 6:

Define oxidation and reduction with example.

Section - B

Question 7:

What is hard water? Write its two uses.

Question 8:

What type of oxide ore is formed when non-metals combine with oxygen?

Question 9:

(a) NH₃ has a higher boiling point than PH₃.Give reason.

(b) Write down the formula of molality & molarity.

Question 10:

How many sigma and π- bonds are there in a molecule of CH₂=CH−CH=CH₂-CH₃?

Question 11:

What is meant by a saturated hydrocarbon? Write first member of Alkane, Alkene and Alkyne with general formula.

Question 12:

Write down the electronic configuration of Fe, Cu and Co?

Question 13:

What is Covalent, Ionic, Metallic and Van der waals radius?

Question 14:

What are allotropes and define allotropes of carbon?

Section - C

Question 15:

Give resonating structure or Lewis structure of O₃ and CO₃^2-?

Question 16:

How will you prepare Baking soda and its property

i. What happen when heptyne react with H₂

ii. What happen when sodium metal react with acid

iii. ___ +____ à caustic soda

Write reactant?

Question 17:

Write Diagonal relationship between boron and silicon, show two chemical reaction?

What do you understand by

i) Electron-deficient

ii) Electron-precise

iii) Electron-rich compounds of hydrogen?

Question 18:

Make MOT energy level diagram of O₂?

Question 19:

Write general property of s-block element with three chemical property

Write general property of p-block element with two chemical properties?

Question 20:

Explain Boyle’s and Charles law.

Section - D

Question 21:

Explain

Bleaching property of H₂O₂
Alkaline solution of potassium ferric cyanide is treated with H₂O₂

Define isotopes of hydrogen.

Question 22:

What are quantum numbers? What permitted values can these have? Explain their significance.

Question 23:

Write the IUPAC name of following-

Question 24:

State Markovnikov’s rule. Give the mechanism of addition of HBr to butene.

Show the preparation of Alkene from-

1) 1,2-dichloroethane

2) Acetylene

3) Birch reduction

4) From Lindlar’s catalyst

Question 25:

Difference between bonding and antibonding orbital?

Difference between sigma- bonding and pi-bonding and when they form?

Question 26:

Differentiate between metal and non-metal.

(i) Define three chemical and physical properties.

(ii) What happen if metal react with non-metal?

(iii) What is the nature of bond?

***********

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