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Question & Answer Forum

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Sreejagaths answered 7 month(s) , 22 day(s) ago

Find integral of root tan x .

∫√(tan x) dx

Let tan x = t2

⇒ sec2 x dx = 2t dt

⇒ dx = [2t / (1 + t4)]dt

⇒ Integral  ∫ 2t2 / (1 + t4

...

  • 4 Answers
  • 11 Likes
  • 68013 Views
Swetha answered 1 year(s) , 5 month(s) ago

What is the difference between aquaculture and pisciculture?

Sol:

Aquaculture is salt water or fresh water breeding, rearing and harvesting of aquatic flora and fauna for commercial use.Aquaculture is the cultivation of aquatic products...

  • 5 Answers
  • 4 Likes
  • 44311 Views
Syeda answered 1 year(s) , 5 month(s) ago

What is a ballistic galvanometer and what is its principle?

A ballistic galvanometer is a galvanometer specially designed to measure the quantity of charge displaced in a current of short duration (such as in the charging or discharging of a capacitor).  It is a sensiti...

Asked by Adarsh

Feb 23

  • 2 Answers
  • 5 Likes
  • 29521 Views
Syeda answered 1 year(s) , 5 month(s) ago

An element has a BCC structure with a cell edge of 288pm.The density of the element is 7.2g/cm3.How many atoms are present in 208g of the element?

Answer.

Formula units per unit cell Z = 2 for BCC
cubic unit cell lattice parameter a = 288 pm = 288 x10-8 cm

Volume V =  a3 =2.39X10-23cm3</

...

Asked by Anakha ullas

Aug 15

  • 2 Answers
  • 5 Likes
  • 28243 Views
Syeda answered 1 year(s) , 5 month(s) ago

Distinguish between self-induction and mutual induction.

Answer.

Self-Induction Mutual induction 1. Self-Induction is the characteristic of the coil itself.
 
2.  When the main current in the coil...

  • 3 Answers
  • 7 Likes
  • 26841 Views
Priyanshu answered 1 year(s) , 4 month(s) ago

Value of sin 2π?

Sol:
Sin 2π = Sin ( 360° + 0) = Sin 0° = 0.

Asked by Bhoothnath

Jun 24

  • 20 Answers
  • 8 Likes
  • 23609 Views
Syeda answered 1 year(s) , 5 month(s) ago

A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V. What is the potential at the centre of the ..

Answer.

In the case of a hollow metal sphere, the electric field inside the shell is zero. This means that the potential inside the shell is constant. Therefore the potential at the centre of th...

Asked by Anurag

Jul 28

  • 2 Answers
  • 1 Like
  • 20664 Views
Syeda answered 1 year(s) , 5 month(s) ago

The treatment of alkyl halide with KOH leads to the formation of alcohols but in the presence of alcoholic KOH, alkenes are the major products. Explain.

Answer.

Alkyl chloride in the presence of aqueous KOH gives substitution product .In an aqueous solution, KOH completely ionizes to give hydroxide ions. OH ion is a strong nucleo

...

Asked by Suyash

Jan 14

  • 2 Answers
  • 5 Likes
  • 20511 Views
Syeda answered 1 year(s) , 5 month(s) ago

What is one one and onto function? Explain with example

Answer.

Sol: for x 1 ≠ x 2 or f(x 1) ≠ f(x 2)
3x 1 ≠  3x 2
3x 1  + 2 ≠  3x 2 + 2...

Asked by Kishore

Feb 2

  • 2 Answers
  • 0 Like
  • 17818 Views
Syeda answered 1 year(s) , 5 month(s) ago

How to see the antilog of 15.6 in the antilog table. please describe each step. Actually i have to find the Kc . If log Kc = 15.6. So i m unable to find the antilog of 15.6 .

Answer.

the no. placed before the decimal becomes power on 10 i.e. 10 to the power 15. Then we have 6 after the decimal point so we have to see .60 in the antilog table
                    thu

...

Asked by Mrigank

May 25

  • 2 Answers
  • 3 Likes
  • 16908 Views
Syeda answered 1 year(s) , 5 month(s) ago

0∫π/2 log(sinx)dx

Answer.


Let I = ∫ 0 π 2 [log(sin x) ]dx   ........(1)
∴ I = ∫ 0 π 2 [log(sin( π 2 - x))]dx                      ∫ a b...

  • 2 Answers
  • 0 Like
  • 15964 Views
Syeda answered 1 year(s) , 5 month(s) ago

Give construction and working of meter bridge.

Answer.


Meter Bridge consists of a 1 meter long standard resistance wire of uniform cross-section held taut between two ends of metallic strip bent at right angle at the ends. Th...

  • 2 Answers
  • 1 Like
  • 15846 Views
Murtaza commented 3 year(s) , 11 month(s) ago

Find the angle between the lines whose direction cosines are given by the equations ?

Sol:
Given lines are 3l + m + 5n = 0 

m = - (3l + 5n) -----------(1)

and 6mn - 2nl + 5lm = 0 ----------(2)

Substitute m in equation (2) we obtain
...

Asked by Murtaza

Dec 10

  • 1 Answer
  • 1 Like
  • 15502 Views
Syeda answered 1 year(s) , 5 month(s) ago

The angular momentum of an electron in a hydrogen atom is proportional to (where r is radius of orbit ): a) 1/r1/2 b) 1/r c)..

Radius of the nth orbit r n ∝ n 2/Z      ⇒    n ∝ (r n) ½
Angular momentum L n = nh/(2π) ∝ (r n) ½

So...

Asked by Anubhav

Dec 23

  • 2 Answers
  • 2 Likes
  • 15367 Views
Syeda answered 1 year(s) , 5 month(s) ago

What is the function of tail in sperm?

Answer.

The sperm cell has a long tail like flagella. The tail is made of protein fibres which contract on alternative sides, giving it a wavelike movement (snake-like motion).  The main functio...

Asked by Surya rao

Jan 31

  • 2 Answers
  • 2 Likes
  • 14591 Views
Syeda answered 1 year(s) , 5 month(s) ago

Which is a better mode of reproduction sexual or asexual? Why?

Sexual reproduction is considered to be a better mode of reproduction because it creates a hybrid that has more vigor than the parents. It also leads to variations that enable organisms to adapt to the changing...

Asked by Surya rao

Jan 31

  • 9 Answers
  • 4 Likes
  • 13882 Views
Kumari sanjana answered 1 year(s) , 9 month(s) ago

Glucose and fructose give the same osazone ? Explain.

Upon hydrolysis, the products glucose and fructose form needle shaped crystals. Three molecules of phenylhydrazine are required, the reaction takes place at first two carbon atoms. The difference in these sugar...

Asked by Vaibhav

May 23

  • 2 Answers
  • 0 Like
  • 13551 Views
Syeda answered 1 year(s) , 5 month(s) ago

What is microsporangium? Where it is located? Show a labelled diagram.

Sol:

Microsporangium is the sporangial structure which contains microspores which are the pollen sacs giving rise to male gametes in an angiosperm.
T.S of anther shows the four lobes for...

Asked by Sagar

Jan 25

  • 2 Answers
  • 0 Like
  • 13103 Views
Syeda answered 1 year(s) , 5 month(s) ago

What is the formula of a compound in which the element Y forms hcp lattice and atoms of X occupy 2/3rd of tetrahedral voids?

The number of tetrahedral voids formed is equal to twice the number of atoms of element Y. But only 2/3 of these tetrahedral voids are occupied by atoms of element X.

Therefore the ratio of number of

...

Asked by Sanalkumar

Apr 26

  • 2 Answers
  • 1 Like
  • 13098 Views
Syeda answered 1 year(s) , 5 month(s) ago

Nitrogen exists as a diatomic molecule. Whereas phosphorus exists a tetra atomic molecule. Explain?

Answer.

Nitrogen is smaller in size hence it forms multiple bonds with other nitrogen and exists as diatomic molecule. Whereas phosphorus atomic size is more so it can form single bond with othe...

Asked by Hasini

May 19

  • 2 Answers
  • 5 Likes
  • 12839 Views
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