Recent questions tagged ch9

If we increases the pressure by 20atm on a sphere which is made up of material of bulkmodulus $5.2\times 10^{10}N/m^2$,what is change in volume percentage?

asked May 7, 2014 by sreemathi.v

1 answer

Two wires of same material have radius in the ratio 2 : 1 and length in the ratio 1 : 2.If equal force is applied on them then ratio of stress is

asked May 7, 2014 by sreemathi.v

1 answer

A steel wire of l=15m and r=1mm is stretched by a unknown force F.If young modulus of steel wire is $2.4\times 10^{11}N/m^2$ and change in length is $5\times 10^{-2}mm$

asked May 7, 2014 by sreemathi.v

1 answer

$150$ workers were engaged to finish a job in certain no. of days. $4$ workers dropped out on second day. $4$ more workers dropped out on third day and so on. It took $8$ more days to finish the work. Find the no. of days in which the work was completed.

asked Apr 11, 2014 by rvidyagovindarajan_1

1 answer

A manufacturer reckons that the value of a machine which costs him $Rs.15,625$, will depreciate each year by $20\%$. find the estimated value at the end of $5$ years.

asked Apr 11, 2014 by rvidyagovindarajan_1

1 answer

A man deposited $Rs. 10,000$ in a bank at the rate of $5\%$ simple interest annually. Find the amount in $15^{th}$ year since he deposited the amount and also find the total amount after $20$ ears.

asked Apr 10, 2014 by rvidyagovindarajan_1

1 answer

A person writes a letter to four of his friends. He asks each one of them to copy the letter and mail to four different persons with the instruction that they move the chain similarly. Assuming that the chain is not broken, and that it costs 50 paise to mail one letter, find the amount spent on the postage when $8^{th}$ set of letter is mailed.

asked Apr 9, 2014 by rvidyagovindarajan_1

1 answer

Shamshad Ali buys a scooter for Rs. 22,000. He pays Rs. 4,000 cash and agrees to pay the balance in annual installment of Rs. 1,000 plus 10% interest on the unpaid amount. How much will the scooter costs him?

asked Apr 9, 2014 by rvidyagovindarajan_1

1 answer

A farmer buys a used tractor for Rs. 12,000. He pays Rs. 6,000 cash and agrees to pay the balance in annual installments of Rs. 500 plus 12% interest on the unpaid amount. How much will the tractor cost him?

asked Apr 8, 2014 by rvidyagovindarajan_1

1 answer

Show that $\large\frac{1\times2^2+2\times 3^2+........n\times (n+1)^2}{1^2\times 2+2^2\times 3+.........n^2\times (n+1)}=\frac{3n+5}{3n+1}$

asked Apr 7, 2014 by rvidyagovindarajan_1

1 answer

Which of the following is highly soluble in water and solvated entirely by hydrogen bonding ?

asked Apr 3, 2014 by pady_1

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Which of the following pairs of compounds are interconvertible in the liver by a single polypeptide chain containing two different catalytic sites ?

asked Apr 3, 2014 by pady_1

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The rate limiting step of fatty acid synthesis is catalyzed by

asked Apr 3, 2014 by pady_1

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Which enzyme is able to degrade cellulose that are absent in mammals but are produced by some bacteria, fungi and protozoa ?

asked Apr 3, 2014 by pady_1

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Which genetic disease is caused by an inability to convert galactose to glucose ?

asked Apr 3, 2014 by pady_1

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Sucrose is (a) non reducing sugar and (b) disaccharide.

asked Apr 3, 2014 by pady_1

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In glycolysis, glucose is phosphorylated by ATP to form glucose 6-phosphate and ADP. This reaction is catalyzed by which enzyme ?

asked Apr 3, 2014 by pady_1

1 answer

Starch is the mixture of two polysaccharide forms called

asked Apr 3, 2014 by pady_1

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Which bond is formed between the anomeric carbon of the sugar and a nitrogen atom of the base of an ATP molecule ?

asked Apr 3, 2014 by pady_1

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D-glucose and D-galactose differ only in their configuration at C-4, thus called

asked Apr 3, 2014 by pady_1

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Which bond between the carbon and nitrogen exhibits partial double bond character ?

asked Apr 3, 2014 by pady_1

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Which of the oxygen-binding protein stores the oxygen in the muscles ?

asked Apr 3, 2014 by pady_1

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Disorders like porphyrias occur due to

asked Apr 3, 2014 by pady_1

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Hemes and chlorophylls are both members of the family of pigments called

asked Apr 3, 2014 by pady_1

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Flavoproteins in cryptochromes and photolyases also serve as

asked Apr 3, 2014 by pady_1

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NAD and NADP are bound to dehydrogenases in a widely conserved structural motif called the

asked Apr 3, 2014 by pady_1

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If equilibrium constant K'eq of a given chemical reaction is 1.0, the standard free energy change G' o of that reaction is

asked Apr 3, 2014 by pady_1

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The free-energy change G, a spontaneously reacting system is always

asked Apr 3, 2014 by pady_1

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Katal (kat) is the unit of

asked Apr 3, 2014 by pady_1

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Pyruvate produced by glycolysis in muscle is converted to lactate by which enzyme ?

asked Apr 3, 2014 by pady_1

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The disorder, alkaptonuria is caused by the absence of which enzyme ?

asked Apr 3, 2014 by pady_1

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Very low density lipoproteins (VLDLs) transport endogenous triacylglycerols and cholesterol from

asked Apr 3, 2014 by pady_1

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Name the coenzyme for pantothenic acid and its deficiency disease

asked Apr 3, 2014 by pady_1

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One collagen deficiency disease, that occurs due deficiency in lysyl oxidase and results in hypermobile joints and hyperextensibility of the skin is

asked Apr 3, 2014 by pady_1

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The linear sequence of amino acids joined together by peptide bonds is termed as the

asked Apr 3, 2014 by pady_1

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Diacylglycerol activates which of the following enzyme ?

asked Apr 3, 2014 by pady_1

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An enzyme that catalyzes the reaction, AB changes the

asked Apr 3, 2014 by pady_1

1 answer

During oxidative phosphorylation in mitochondria which of the following takes place ?

asked Apr 3, 2014 by pady_1

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ATP synthase that carries out the synthesis of ATP is located in _______ .

asked Apr 3, 2014 by pady_1

1 answer