Q23 of 26 Page 1

Due to hectic and busy schedule, Mr. Singh started taking junk food in the lunch break and slowly became habitual of eating food irregularly to excel in his field. One day during meeting he felt severe chest pain and fell down. Mr. Khanna a close friend of Mr. Singh took him to doctor immediately. The doctor diagnosed that Mr. Singh was suffering from acidity and prescribed some medicines. Mr. Khanna advised him to eat homemade food and change his lifestyle by doing yoga, Meditation and some physical exercise. Mr. Singh followed his friend’s advice and after few days he started feeling better. After reading the above passage answer the following:

A. What are the values (at least two) displayed by MR. Khanna?


B. What are antacids? Give examples.


C. Would it be advisable to take antacids for a long period of time? Give reasons.


A.


Primarily Mr. Khanna displays compassion and care towards his colleagues.


Also Mr. Khanna shows the need to eat healthy diet and knows and explains the side effects of fast food in the above passage.


B.


Medication to neutralize the extra amount of stomach acid generated due to irregular eating habits or spicy and junk food. These reduce the heartburn and sour stomach. These antacids contain bases that neutralize the extra acid in the stomach. The main ingredients may be aluminum hydroxide or calcium carbonate. For e.g. alternagel, titralac, alamag are some examples of antacids.


C.


Antacids contain hydroxides which are alkaline in nature; longer intake of antacids will increase the basic concentrations of the stomach, in order to neutralize this stomach generates more acid and the walls of the stomach are damaged. Thus longer duration of antacids in fact any medicine is not recommended.


More from this chapter

All 26 →
21

A. For the complex . Write the hybridization, magnetic character and spin of the complex. ( Z = 27)

B. Why is the complex more stable than the complex ?


 22

How do you convert:

(i) Chlorobenzene to toluene


(ii) Bu-1-ene to but-2-ene


(iii) Ethanol to ethyl iodide


OR


What happens when:


(i) n-butyl chloride is treated with alcoholic KOH


(ii) 2-chloropropane is treated with sodium in presence of dry ether


(iii) Chlorobenzene is treated with in the presence of anhydrous .


Write the chemical equations involves in the above reactions.


 24

A. Calculate ΔG° and log Kc for the following reaction at 298 K:


Given:


B. Using the values of A and B, predict which is better for coating the surface of iron to prevent corrosion and give reasons.


,


OR


A. The conductivity of 0.001 mol L-1 solution of CH3COOH is 3.905× 10-5 S cm-1. Calculate its molar conductivity and degree of dissociation (α).


Given: and



B. What type of battery is dry cell? Write the overall reaction occurring in dry cell.


 25

A. Account for the following:

(i) is acidic whereas is basic


(ii) Zr and Hf exhibit similar properties.


(iii) Transition metals form a large number of complex compounds.


B. Write the preparation of from pyrolusite ore . Write the type of magnetism shown by KMnO4 and K2MnO4.


OR


A. The elements of 3d transition series are given as :


Sc Ti V Cr Mn Fe Co Ni Cu Zn


Answer the following:


(i) Copper has exceptionally positive value. Why?


(ii) Which element is a strong reducing agent in +2 oxidation state and why?


(iii) salts are colourless. Why?


B. Write the preparation of sodium dichromate from chromite ore