Archives

Is so3 soluble in water

To form an aqueous solution of sulfuric acid (H2SO4), sulphur trioxide (SO3) dissolves in and reacts with water. Sulfur trioxide is a crystalline... View Article

What is the most reactive element in Group 16

Oxygen is the periodic table's most reactive portion. In the periodic table, it is the second most electronegative product, making it the group's... View Article

How do you test for organic compounds

Infrared spectroscopy is the most common detection tool that organic chemists use to determine functional groups. Infrared spectroscopy... View Article

Which salt has no water of crystallization

Crystallization water is water that is chemically bound into the form of a crystal. For hydrated copper(II) sulphate, here is the formula. Note... View Article

How do you Evaluate Determinants?

In Mathematics, a determinant is a special number that is calculated from the square matrix. If A is a matrix, the determinant of matrix A is... View Article

What is the Cross Product of Two Parallel Vectors?

The cross product of two parallel vectors is a zero vector (i.e. . Now the cross product of two parallel vectors is: p>... View Article

What is Transpose Mean?

In Mathematics, transpose means flipping a matrix over its diagonal. In other words, the rows and columns of a matrix are swapped. The transpose... View Article

What are the 3 Conditions of Continuity?

If a function is said to be continuous at x=a, it should possess all the the three conditions: f(a) should be defined exists... View Article

What is the 4th square root of 32?

The fourth root of any number say a is the value b such that when we multiply b for four times we get the value a. The value of 4th square root... View Article

The value of [latex](cos \pi/2 + i \: sin \pi/2)(cos \pi/4 + i \: sin \pi/4)(cos \pi/8 + i \: sin \pi/8)…infinity \: is[/latex]

(1) 1 (2) 0 (3) -1 (4) None of these (cos π/2 + i sin π/2)(cos π/4+i sin π/4)(cos π/8+i sin π/8)...∞ = (cos π/2 + i sin π/2)(cos π/22+i sin ... View Article

If z1 = 1 + 2i and z2 = 3 + 5i, then Real part of bar (z2 )z1/z2 (1) -31/17 (2) 17/22 (3) -17/31 (4) 22/17

Given z1 = 1 + 2i and z2 = 3 + 5i. = 3-5i = (3-5i)(1+2i)/(3+5i) = (3-5i)(1+2i)(3+5i)/(3+5i)(3-5i) = (1+2i)(9-30i-25)/(9+25) =... View Article

If arg (z) = theta , then arg (bar {z}) is equal to (1) theta – pi (2) pi-theta(3) theta (4) -theta

Given arg (z) = θ z = r cos θ+i sin θ = r cos θ-i sin θ = r cos (-θ)-i sin (-θ)(-1) = r cos... View Article

The complex numbers sin x + i cos 2x and cos x – i sin 2x are conjugate to each other for (1) x = npi (2) x = (n+½)pi (3) x = 0 (4) No values of x

Given sin x + i cos 2x and cos x - i sin 2x are conjugate to each other. sin x - i cos 2x = cos x - i sin 2x Comparing real and imaginary parts... View Article

For any two complex numbers Z1 and Z2 and any real numbers a and b, |(az1 – bz2)|^2+ |(bz1 + az2)|^2 is equal to (1) (a^2+b^2)(|z1|+|z2|)(2) (a^2+b^2)(|z1|^2+|z2|^2)(3) (a^2+b^2)(|z1|-|z2|^2)(4) None of these

Question. For any two complex numbers Z1 and Z2 and any real numbers a and b, |(az1 - bz2)|2+ |(az1 + bz2)|2 is equal to 1) (a2+b2)(|z1|+|z2|)... View Article

Who Discovered Speed?

The Italian physicist Galileo Galilei is credited with the discovery of speed. Galileo first measured speed by considering the distance covered... View Article

What happens to resistance when length is doubled?

The expression to find the resistance is given as follows: From the equation, we understand that resistance is directly proportional to the... View Article

If z is a complex number such that z = – bar z, then (1) z is purely real (2) z is purely imaginary (3) z is any complex number (4) real part of z is same as its imaginary part

Solution: Let z = x+iy = -(x-iy) z = => x+iy = -x+iy 2x = 0 x = 0 So z is purely imaginary. Hence option (2) is the answer.... View Article

M	T	W	T	F	S	S
						1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30