Which of the following is not responsible of producing diarrhea? b) Increase in Cl– secretion c) Decrease in reabsorption of water by the intestinal epithelium d) Decrease in Cl– secretion

Which one of the following sets is incorrect to show the inter-relationships among price elasticity coefficient, change in price and change in total revenue ? Price elasticity coefficient Change in price Change in Total Revenue 1) Zero Increase Decrease Increase Decrease (2) Less than 1 Increase Decrease Decrease Increase (3) Equal to 1 Increase Decrease No change No change (4) More than 1 Increase Decrease Decrease Increase

A

(1)

B

(2)

C

(3)

D

(4)

About 40 million people (over 75% are children) are affected by water borne diseases every year. Nearly six million children below 14 years of age suffer from fluorosis due to fluoride contamination in water. Arsenic is another dangerous contaminant in ground water, putting at risk more than 10 million people in the country. Bacteriological contamination, which leads to diarrhea, cholera, hepatitis etc., is at alert level in India. Contamination due to Iron, hardness and salinity in water are other major concern. Medical expenditure on water borne diseases is estimated to be Rs. 2400 crores annually in the country. The need for desalination and water purification is destined to grow in the coming years as the requirement for water increases. Bhabha Atomic Research Centre (BARC) has been engaged in R&D on desalination and water purification technologies for several years and has developed indigenous technologies which are available for know-how transfer to interested parties The given information, if accurate, most accurately supports which statement?

A

The voice of the author is one of caution, and he/she wants to warn the reader as to what is going to happen.

B

Bacteriological contamination is the only one that we have to be very careful about

C

Along with water borne diseases, air borne diseases must also be treated effectively

D

The need for water purification is coming down, as the years pass by.

The amount of coagulant needed for coagulation of water increases with
(i) Increase in turbidity of water
(ii) Decrease in turbidity of water
(iii) Increase in temperature of water
(iv) Decrease in temperature of water
The correct answer is

A

(i) and (ii)

B

(i) and (iv)

C

(ii) and (iii)

D

(ii) and (iv)

Given below are three quantities named A, B and C. Based on the given information, determine the relation among the three quantities. Quantity A∶ A 30 litre mixture of wine and water has wine and water in the ratio 5∶ 7. How much water must be drawn off so that the ratio of wine and water becomes 25∶ 19? Quantity B∶ A 35 litre mixture of wine and water has wine and water in the ratio 1∶ 3. How much water must be drawn off so that the ratio of wine and water becomes 1.75∶ 3.35? Quantity C∶ A 27 litre mixture of wine and water has wine and water in the ratio 3∶ 2. How much water must be drawn off so that the ratio of wine and water becomes 81∶ 11?

A

A = B = C

B

A > B > C

C

B > C > A

D

A > C > B

E

A < B > C

The amount of coagulant needed for coagulation of water increases with (i) Increase in turbidity of water (ii) Decrease in turbidity of water (iii) Increase in temperature of water (iv) Decrease in temperature of waterThe correct answer is

A

(i) and (ii)

B

(i)and(iv)

C

(ii) and (iii)

D

(ii) and (iv)

Consider the following statements: The addition of surfactants in the concrete mix results in: 1. increase in the water-cement ratio 2. decrease in the water-cement ratio 3. increase in the strength of concrete 4. decrease in the curing duration 5. increase in the density of concrete Which one of the following statements is correct?

A

3, 4 and 5 only

B

2, 3 and 5 only

C

1, 3 and 4 only

D

1, 4 and 5 only

A closed vessel is half-filled with water. There is a hole at the top of the vessel and air is pumped out from this hole. Then (a) The density of the liquid will decrease (b) The pressure at the surface of the water will decrease (c) The water level will rise up in the vessel (d) The force by the water on the bottom of the vessel will decrease Which of the above statements are correct?

A

(b) and (c) are correct

B

(b), (c) and (d) are correct

C

(b) and (d) are correct

D

(a) and (b) are correct

Consider the following statements regarding animal tissues: 1. All complex animals consist of only four basic types of tissues. 2. There are two types of epithelial tissues namely simple epithelium and compound epithelium. Which of the statements given above is/are correct?

A

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

Consider the following statements regarding animal tissues: 1. All complex animals consist of only four basic types of tissues 2. There are two types of epithelial tissues namely simple epithelium and compound epithelium. Which of the statements given above is/are correct?

A

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

In the Intestinal Mucosal Epithelium, which cell secrete Mucus?

A

Guard Cell

B

Goblet Cell

C

Blood Cell

D

Nerve Cell

Which of the following is not responsible of producing diarrhea? b) Increase in Cl– secretion c) Decrease in reabsorption of water by the intestinal epithelium d) Decrease in Cl– secretion

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