How many molecular orbitals are there?
The molecular orbitals of the molecule depend on the total number of the atomic orbitals that make them. Let us... View Article
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What coupling means?
Coupling is a mechanical device that connects two shafts together at the ends. The primary purpose of coupling is to... View Article
How do I know if a bond is polar?
A covalent bond can be either polar or nonpolar. To determine the polarity of the covalent bond mathematically, the difference... View Article
Is 1 HP equal to a horse
Not really. It is a misconception that one horsepower is equal to the power production by a horse. James Watt... View Article
Are antiferromagnetic materials magnetic
The antiferromagnetic materials will exhibit different behaviour when it is placed in a magnetic field depending on the temperature. At... View Article
Where is the electric potential zero?
The electric potential is zero at an infinite distance from the point charge. For two opposite charges of equal magnitude,... View Article
Which unit is Watt?
The unit of power is Watt. In the SI units, Watt is defined as the derived unit of one joule... View Article
What is potassium permanganate good for
Potassium permanganate can be applied on skin surfaces that are oozing pus or blistered. It kills the germs by releasing... View Article
What is the molecular weight of a molecule?
The molecular weight of a molecule is the mass of one mole of the substance. The molecular weight can be... View Article
What is pulse code modulation in digital communication?
Pulse code modulation is a digital modulation technique. The analog information is converted to binary variables by pulse code modulation.... View Article
What is energy in an electric field?
In an electromagnetic field, the total energy stored is by UEM = (ε/2)।E।2+(1/2μ)।B।2 Here, ε is the permittivity of the... View Article
What is fringe in wave optics?
The alternating bright and the dark band formed due to interference is called fringe. When two light waves superimpose it... View Article
Statement 1: Both sin x and cos x are decreasing function in (π / 2, π). Statement 2: If a differentiable function decreases in (a, b) then its derivative also decreases in (a, b)
1) Statement 1 is true, Statement 2 is true; statement 2 is a correct explanation for statement 1. 2) Statement... View Article
Let f (x) = 2 + cos x for all real x. Statement 1: For each real t, there exists a point c in [t, t + π] such that f’ (c) = 0 because . Statement 2: f (t) = f (t + 2π) for each real t
1) Statement 1 is true, Statement 2 is true; statement 2 is a correct explanation for statement 1. 2) Statement... View Article
If f (x) = Integral from 0 to x et^2 (t – 2) (t – 3) dt for all x ∈ (0, ∞), then
1) f has a local maximum at x = 2 2) f is decreasing on (2, 3) 3) There exists... View Article
If f (x) = {3x2 + 12x, when -1 ≤ x < 2 and -1, when 2 < x ≤ 3
1) f (x) is increasing on [–1, 2] 2) f (x) is continuous on [–1, 3] 3) f’(2) does not... View Article
Which of the following curves cut the parabola y2 = 4ax at right angles
1) x2 + y2 = a2 2) y = e–x/2a 3) y = ax 4) x2 = 4ay 5) 2... View Article
The function f (x) = Integral from -1 to x t (et – 1) (t – 1) (t – 2)3 (t – 3)5 dt has a local minimum at x =
1) 0 2) 1 3) 2 4) 3 5) 3 and 4 Solution: (2) 1 and (4) 3 f (x)... View Article
The functions f (x) = and g (x) =
1) Local maxima at x = 1 + ln 2 and minima at x = e 2) Local maxima at... View Article
Let f (x) be non-constant twice differentiable function defined on (-∞, ∞) such that f (x) = f (1 – x) and f’ (1 / 4) = 0, Then,
1) f’’ (x) vanishes at least twice [0, 1] 2) f’ (1 / 2) = 0 3) ∫0.50.5 f (x... View Article
