FBISE Class 10 Chemistry Pre-board Exam
Test Paper and Guess Paper for Exam Preparation 2024
Chemistry Solved SSC-II - Pre-Board Exam - Model Paper - Guess Paper FBISE Class 10
CHEMISTRY SSC–II
SECTION – A (Marks 12)
'Section – A' is compulsory. All parts of this section are to be answered on this page and handed over to the Centre Superintendent. Deleting/overwriting is not allowed. Do not use lead pencil.
Q.1 Fill the relevant bubble for each part. Each part carries one mark.
(1) Which of the following gas is used to destroy harmful bacteria in water?
A. Cl2 B. H2 C. Br2 D. I2
(2) Plants convert glucose into:
A.starch B.lipids C.amino acid D.protein
(3) Dipeptide is formed by joining of two molecules of:
A. Amino acids B. Alcohols C. Carboxylic acids D. Amines
(4) Two products obtained from the carbonating tower during the Solvay Process are:
A. NH4Cl and CO2 B. NH4HCO2 and NH4Cl C. NaHCO3 and NH4Cl D. NaHCO3 and NH3
(5) Each DNA nucleotide consist of
A.4 components B.3 components C.2 components D.5 components
(6) The word vitamin was first used by
A. Francis crick B. Casmir funk C.F.G Hopkins D.Eijkman
(7) Permanent hardness of water can be removed by:
A.cooling B.Boiling C.Clarks’s method D.ion exchange method
(8) The substance which fight against the disease in living organism
A.Carbohydrates B.Protein C. Fat D. Enzymes
(9) Raffinose produces how many units of simple sugar when hydrolysed
A.2 B.3 C.4 D.1
(10) Most air pollution is caused by
A.Oxygen B.burning of fossil fuels C.Carbon dioxide D.Acid rain
(11) What is the formula of ammonium carbamate?
A.NH4CO B.NH2COONH4 C.NH2CONH2 D.NH4CONH4
(12) Which of the following petroleum product is used as chemical feedstock
A.Petrol B.Naphtha C.Fuel Oil D.Bitumen
SECTION – B (Marks 33)
Note: Answer all parts from Section ‘B’ and all questions from Section ‘C’ on the E-sheet. Write your answers on the allotted/given spaces.
Q.2 Attempt all parts from the following. All parts carry equal marks. (11 X 3 = 33)
i. Discuss three ways by which global warming can be decreased? (1+1+1)
OR
Write three disadvantages of acid rain. (1+1+1)
ii.What is a peptide bond
iii.what is a dextrose sugar
OR
Why is cellulose part of human diet?
iv.what is slaked lime how it is produced?
v.what is acid rains?write its two effects
OR
What are pollutants write any two effects of Sulphur dioxide on human body
vi. Write the name and formulas of the three Nitrogen containing fertilizers. (1+1+1)
OR
What is urea?how it is prepared
vii.show through chemical equations how ozone layer is being depleted?
viii.write the products obtained from fractional distillation of petroleum.
ix.describe coagulation step in raw water treatment.
X.how copper ore is concentrated in forth flotation process
OR
How are urea prills produced?
Xi.write chemical reactions that take place in urea formation
SECTION – C (Marks 20)
Note: Attempt all questions. Marks of each question are given within brackets.
Q.3 What is hard water? Explain the methods for removing ermanent hardness of water. (5)
OR
What is nucleic Acid? Describe structure and function of DNA. (5)
Q4.Write properties of water (5)
OR
Explain the source and use of a)Protein b)carbohydrates (5)
Q5.Write main steps of Solvay process supported with chemical equations [5]
OR
Draw flow sheet diagram for Solvay process
Q6.Enlist the names of layers of atmosphere. Explain the first two layers which are nearest to earth
