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(A) : Botulism can be avoided by heating...

(A) : Botulism can be avoided by heating food before consumption.
(R) : The toxin is destroyed on exposure to temperature of `90^(@)C` for ten minutes.

A

If both (A) and (R) are true and (R) is the correct explanation of (A).

B

If both (A) and (R) are true but (R) is not the correct explanation of (A).

C

If (A) is true but (R) is false.

D

If both (A) and (R) are false.

Text Solution

Verified by Experts

The correct Answer is:
A
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Prices of foodgrains have risen by and of other items of consumption by 15%. If the ratio of an employee's expenditure on foodgrains and other items 2 : 5, by how much should his salary be increased so that he may maintain the same level of consumption as before, assuming that his present salary is Rs. 3500? R s .300 b. R s .350 c. R s .375 d. R s .475

A pan filled with hot food cools from 50^@C to 40^@C in 2 minutes and to 30^@C in next 5 minutes. Calculate the temperature of surroundings.

Knowledge Check

  • A : Micelles can be formed at above CMC and at below Kraft temperature. R : For NaCl solution, Kraft temperature is 60^(@) C .

    A
    If both Assertion & Reason are true and the reason is the correct explanation of the assertion, mark (1)
    B
    If both Assertion & Reason are true but reason is not the correct explanation of the assertion, then mark (2)
    C
    If Assertion is true statement but Reason is false, then mark (3)
    D
    If both Assertion and Resson are false statements , then mark (4)
  • The rate of loss of heat by radiation from a body at 400^(@)C is R. The radiation from it when the temperature rises to 800^(@)C ?

    A
    2 R
    B
    4 R
    C
    16 R
    D
    None of the above
  • A system S receives heat continuously from an electric heater of power 10 W . The temperature of S becomes constant at 50^(@)C when the surrounding temperature is 20^(@)C . After the heater is switched off, S cools from 35.1^(@)C to 34.9^(@)C in 1 minute . the heat capacity of S is

    A
    `100 J//^(@)C`
    B
    `300 J//^(@)C`
    C
    `750 J//^(@)C`
    D
    `1500 J//^(@)C`
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