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Subject: Biology, asked on 14/4/18

Give it answer with proper explanation:

69. Consider the following (s) statements
I.   Pearl is obtained from oyster.
II.  Calcium carbonate is the main component of pearl. 
III. Rainbow coloured pearl is supposed to be the best pearl. 

Which of the statement (s) given above is/are correct?
(a) I, II and III              (b) II and III

(c) Only I                      (d) Only II

Subject: Biology, asked on 9/2/18

 Distinguish between the roles of flocks and anaerobic sludge digesters in sewage treatments. ​

Subject: Biology, asked on 8/2/18

Given below is a list of six micro-organisms. State their usefulness to humans. 
 (a) Nucleopolyhedrovirus 
 (b) Saccharomyces cerevisiae 
 (c) Monascus purpureus 
 (d) Trichoderma polysporum 
 (e) Penicillium notatum 
 (f) Propionibacterium sharmanii 

Subject: Biology, asked on 8/2/18

List the events that lead to biogas production from waste water whose BOD has been reduced significantly. ​​

Subject: Biology, asked on 5/2/18

What is the difference between fermentation with distillation and without distillation?

Subject: Biology, asked on 20/1/18

Q 17 part b and c

17. Give reasons: 

(ii) These days, microbes are utilised in laundries. 
(iii) Organic farmers do not eradicate but manage pest populations. 
 

Subject: Biology, asked on 28/12/17

Q. In the following question a statement of Assertion is given by a statement of Reason just below it.

a. If both Assertion and Reason are true and Reason is the correct explanation of Assertion
b. If both Assertion and Reason are true but Reason is the correct explanation of Assertion. 
c. If Assertion is true , but Reason is false.
d. If both Assertion and Reason are false.

Assertion : In alcoholic drink, the alcohol is converted into glucose in liver
Reason: Liver cells are able to produce glucose for alcohol by back fermentations.
 

Subject: Biology, asked on 23/10/17

Test Question

Subject: Biology, asked on 30/9/17

Plz answer this question
Q.15. (a) How do organic farmers control pests? Give two examples.
(b) State the difference in their approach from that of conventional pest control methods.

Subject: Biology, asked on 21/6/17

​​Which one of the following statements is correct with respect to Biochemical Oxygen Demand (BOD)? 
A. Secondary treatment of effluent decreases the BOD 
B. Secondary treatment of effluent increases the BOD 
C. Secondary treatment of effluent does not change the BOD 
D. Secondary treatment of effluent first increases and then decreases the BOD

Subject: Biology, asked on 18/1/17

Solve this:

Subject: Biology, asked on 10/1/17

Difference between primary and secondary sludge

Subject: Biology, asked on 18/10/16

how does primary sludge is differ from activated sludge? what type of changes in the sludge are carried out in anerobic sludge digester? give the composition of biogas produced in the sewage treatment. 

Subject: Biology, asked on 6/10/16

whats coryza?

Subject: Biology, asked on 6/10/16

what are pasteurellosis and salmonellosis?

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