Chemistry
Previous year question paper with solutions for Chemistry May-2018
Our website provides solved previous year question paper for Chemistry May-2018. Doing preparation from the previous year question paper helps you to get good marks in exams. From our CHEM question paper bank, students can download solved previous year question paper. The solutions to these previous year question paper are very easy to understand.
These Questions are downloaded from www.brpaper.com You can also download previous years question papers of 10th and 12th (PSEB & CBSE), B-Tech, Diploma, BBA, BCA, MBA, MCA, M-Tech, PGDCA, B-Com, BSc-IT, MSC-IT.
Print this page
Question paper 1
SECTION-A
Q1. a) Fill in the blanks:
i. 1 degree Clark means ……………….. .
Answer:
ii. Water is a ……………… solvent.
Answer:
iii. The process employed to concentrate an ore is called ………………….. .
Answer:
iv. Cementation is the process of …………………. .
Answer:
v. Galvanization is the process of depositing ……………………. on iron.
Answer:
vi. In combustion of fuels ……………………… reactions occur.
Answer:
vii. Gun powder is a mixture of …………….. .
Answer:
viii. The unit of viscosity is ……………………. .
Answer:
ix. A good lubricant should have …………………… flash point.
Answer:
x. Acid Refractoriness are resistant to ………........
Answer:
b) State True or False.
xi. Hard water does not give lather with soap.
Answer:
xii. All ores are minerals.
Answer:
xiii. Noble gases undergo corrosion.
Answer:
xiv. A good fuel has low calorific.
Answer:
xv. Viscosity index of oil can be increased by adding acid
Answer:
SECTION-B
Q2. Attempt any six questions.
a. What are the requisites of water for drinking purposes?
Answer:
b. What is the difference between metal and ore?
Answer:
c. Explain the term galvanic corrosion?
Answer:
d. What do you understand by the analysis of coal? What are its kinds?
Answer:
e. What are the advantages of gaseous fuels?
Answer:
f. What is meant by oxygen balance and how it is important?
Answer:
g. Write a note in Octane number?
Answer:
h. How explosives are classified?
Answer:
i. Define Refractories? How will you classify Refractories?
Answer:
SECTION-C
Q3. Attempt any five questions.
i. Explain electromagnetic separation process for the concentration of ores.
Answer:
ii. Describe the various methods used to protect the metals from corrosion.
Answer:
iii. What are rocket propellants? How are they classified?
Answer:
iv. Write a short note on solid lubricant.
Answer:
v. Discuss the following properties of lubricants:
a) Flash point and Fire point
b) Acid value
Answer:
vi. What are the main characteristics of a good refractory?
Answer:
vii. What are the major sources of air pollution? What measures do you adopt to avoid it?
Answer:
viii. Write a note on Sewage treatment?
Answer:
Question paper 2
SECTION-A
Q1. Do as directed.
a. The chemical formula of ferric sulphate is _________.
Answer:
b. A chemical equation in which heat is evolved is called_____________.
Answer:
c. Proton was discovered by _____
Answer:
d. There are _________ periods in periodic table.
Answer:
e. Cations are ___________ charged ions.
Answer:
f. The reaction of an acid with a base to form salt and water is called __________
Answer:
g. The functional group of amide is____________
Answer:
h. Ions are neutrals particles. (T/F)
Answer:
i. Ethylene is unsaturated in nature. (T/F)
Answer:
j. Reduction involves the loss of electrons. (T/F)
Answer:
SECTION-B
Q2. Attempt any ten questions.
i. What are the limitations of a chemical equation?
Answer:
ii. Define the terms Electron, Proton and Neutron.
Answer:
iii. Differentiate between an orbit and orbital.
Answer:
iv. Define chemical bond. What is the cause of chemical combination?
Answer:
v. What are the advantages of long form of periodic table?
Answer:
vi. Differentiate between temporary and permanent hardness of water.
Answer:
Answer:
vii. Explain scale and sludge formation.
Answer:
viii. State and explain Boyle’s law.
Answer:
ix. What are electrolytes and non electrolytes?
Answer:
x. How will you define indicator, titration and end point?
Answer:
xi. Explain Faraday’s second law of electrolysis.
Answer:
xii. What are primary and secondary cell?
Answer:
xiii. What is the functional group of
(a) Alcohols (b) Amide (c) Ketone?
Answer:
SECTION-C
Attempt any three questions.
Q3. a) Give main features of Bohr’s atomic model.
b) Balance the following equation by hit and trial method.
5 Fe + H2O Fe3O4 + H ------->
Answer:
Q4. a) State and explain Heisenberg’s uncertainty principle and Aufbau Principle.
b) Name the four quantum numbers and explain the significance of each quantum numbers.
Answer:
Q5. a) What are the various factors affecting the degree of ionization?
b) what is a buffer solution? Explain the types of buffer solution
Answer:
Q6. a) How will you remove hardness of water by permutit process?
b) Differentiate between reversible and irreversible reactions.
c) Explain the term catenation.
Answer:
Q7. a) Differentiate between alkene and alkyne.
b) What is the purpose of electroplating?
c) Explain the concept of redox reaction.
Answer: