close

Miss

 Miss Article

Surname Middle Number Candidate Signature

Different Names Candidate Number

To get Examiner's Employ

General Certificate of Supplementary Education Summer 2007 SCIENTIFIC RESEARCH B Product Chemistry C1 CHEMISTRY Product Chemistry C1 Higher Rate Thursday 21 June 2007 1 . 31 pm to 2 . 12-15 pm CHY1H

H

To get Examiner's Use

Question Mark Question Mark

For this daily news you must have: a ruler. You could use a calculator.

Time allowed: 45 minutes Guidelines Use green or dark ink or perhaps ball-point coop. Fill in the boxes on top of this page. Response all questions. Answer the concerns in the spots provided. Perform all hard work in this guide. Cross through any job you do not want to be marked. Information The maximum draw for this conventional paper is forty-five. The represents for queries are proven in conference. You are required to use a calculator where ideal. You happen to be reminded in the need for very good English and clear business presentation in your answers. Advice In all calculations demonstrate clearly how you work out your answer.

1 2

a few 4 a few

Total (Column 1)

Total (Column 2)

TOTAL

Examiner's Initials

G/M21768/Jun07/CHY1H

6/6/6/6

CHY1H

2 Solution all questions in the spaces provided.

LEAVE PERIMETER BLANK

you Limestone provides the compound calcium mineral carbonate, CaCO3. (a) Limestone is used to generate cement within a rotary kiln. Waste gas Limestone and clay

Methane and air flow Cement

Utilize information in the diagram to name the two main waste gases from this rotary kiln. 1 ..................................................................................................................................... 2 ..................................................................................................................................... (2 marks)

G/M21768/Jun07/CHY1H

3 (b) Columns used as supports for structures can be made from materials such as limestone blocks or tangible. Concrete combination Limestone hindrances

LEAVE PERIMETER BLANK

Stainlesss steel rods

Tangible is a combination of cement, crushed stone, small rocks and normal water From the blueprints, name that you simply think may be the better materials for making a column.............................................................................................................................................. Give three advantages for your choice of material. 1 ........................................................................................................................................................................................................................................................................................ 2 ........................................................................................................................................................................................................................................................................................ 3........................................................................................................................................................................................................................................................................................ (3 marks)

____

5

Turn over for the next question

Turn over

G/M21768/Jun07/CHY1H

4 two Copper can be described as widely used steel. The main ore of birdwatcher contains copper mineral sulfide. Copper can be removed from copper sulfide within a three level process. (a) In the initial stage of extraction the copper sulfide is heated in atmosphere. (i) Equilibrium the sign equation intended for the reaction. Cu2S +.......... T-MOBILE в†’.......... CuO + SO2 (1 mark)

LEAVE MARGIN BLANK

(ii) Explain for what reason there would be a great environmental issue if the gas from this response were permitted to escape in to the atmosphere............................................................................................................................................................................................................................................................................

 Essay regarding Fmcg Bop

Essay regarding Fmcg Bop

Influence of The labels on Base of the Pyramid consumers with reference to FMCG market in India Abstract Marketers increasingly face challenges in looking to understand the decision-making…...

Read
 Student Dissertation

Student Dissertation

Take Good Care of This Book This textbook is the house of your institution. Take good care to never damage or lose it. Allow me to share…...

Read