X ASSIGNMENT : AP & CARBON COMPOUNDS

X – TEST  CARBON & AP

1.       Which of the following hydrocarbons undergo addition reactions :

C₂H₆, C₃H₈, C₃H₆, C₂H₂and CH₄. 

2.       Differentiate between diamond and graphite. 

3.       Write five ill effects of alcohol drinking. 

4.       Differentiate between ionic compounds and covalent compounds. 

5.       Differentiate synthetic detergents and soaps. 

6.       Write important uses of (a) ethanol and (b) ethanoic acid. 

7.       What happens when ethanol reacts with   (i) sodium     (ii) potassium permanganate solution. 

8.       An organic compound X with a molecular formula C₂H₆O undergoes oxidation with in presence of alkaline KMnO₄ to form a compound Y. X on heating in presence of Conc. H₂SO₄ at 443K gives Z. Which on reaction with H₂Oin presence of H₂SO₄ gives back `X` `Z` reacts with Br₂ (aq) and decolorizes it. Identify X, Y, & Z and write the reactions involved.

9.       An organic compound ‘A’ is widely used as a preservative in pickles and has a molecular formula C₂H₄O₂. This compound reacts with ethanol to form a sweet smelling compound ‘B’.

(i) Identify the compound ‘A’

(ii) Write the chemical equation for its reaction with ethanol to form compound ‘B’.

(iii) How can we get compound ‘A’ back from ‘B’?

(iv) Name the process and write corresponding chemical equation.

(v) Which gas is produced when compound ‘A’ reacts with washing soda? Write the chemical equation

1.       (a) Is 52 a term of AP 5,8,11,14…

       (b) Which term of AP 24,21,18,15,… is the first negative term.

2.       Find the 10th term of the AP : 2, 7, 12, . . .

3.       Find the 20th term from the last term of the AP : 3, 8, 13, . . ., 253.                                                                 

4.       Which term of the AP : 21, 18, 15, . . . is – 81? Also, is there any term which is  0?

5.       Check whether 302 is a term of the list of numbers 3, 9, 15, 21…

6.       How many two-digit numbers are divisible by 7 between 301 and 500?

7.       Which term of the AP : 113, 109, 105 . . ., is its first negative term?

8.       For what value of n, are the nth terms of two APs: 63, 65, 67, . . . and 3, 10, 17, . . . equal?

9.       Which term of the AP : 3, 15, 27, 39, . . . will be 132 more than its 54th term?

10.    How many terms of the AP : 24, 21, 18, . . . must be taken so that their sum is 78?                            

11.    A manufacturer of TV sets produced 500 sets in the third year and 700 sets in the seventh year. Assuming that the production increases uniformly by a fixed number every year, find :

(i) the production in the 1st year (ii) the production in the 10th year  

HOME WORK ( SUBMIT ON MONDAY)

1         Define

(A) Covalent bond  (B) Functional group(C) Hydrocarbons (D) Saturated carbon compounds             (E) Unsaturated carbon compounds (F)  Allotropy (G) Combustion(H) Esterification (I) Saponification

2         A sum of Rs 1000 is invested at 8% simple interest per year. Calculate the interest at the end of each year. Do these interests form an AP? If so, find the interest at the end of 30 years making use of this fact.

Mr. Rao started work in 1994 at an annual salary of Rs 5000 and received an increment of Rs 350 each year. In which year did his income reach Rs 12000? Specify the year also.