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The species having pyramidal shape is:(A) SO₃
(B) BrF₃
(C) SiO₃²⁻(D) OSF₂

The correct answer is (D) OSF2 From VSEPR theory we get to know that SO2 is sp2 hybridized with three bond pairs and... View Article

The 0° Meridian is also known as_________

The 0° Meridian is also known as Prime Meridian. Let us know more about prime meridian The meridian which passed through... View Article

Suppose the charge of a proton and an electron differ slightly. One of them is -e, the other is (e + Δe). If the net of electrostatic force and the gravitational force between two hydrogen atoms placed at a distance d (much greater than atomic size) apart is zero, then Δe is of the order of [Given: mass of hydrogen m_h = 1.67 x 10-27 kg] (a) 10^-23 C (b) 10^-37 C (c) 10^-47 C (d) 10^-20 C

The correct answer is (d) 10-20 C mh=1.67×10−27kg The net charge on hydrogen atom q=(e+Δe)−e=Δe Let... View Article

Between 1 and 31, m numbers have been inserted in such a way that the resulting sequence is an A.P. and the ratio of 7th and (m – 1)th numbers is 5: 9. Find the value of m.

An arithmetic sequence or progression is defined as a sequence of numbers in which for every pair of consecutive terms, the second number is... View Article

If α and β are the roots of the equation ax2 + bx + c = 0, then α / [ɑβ + b] + β / [aɑ + b] =

A quadratic equation is an equation of degree 2, meaning that the highest exponent of this function is 2. The standard form of a quadratic is y... View Article

How many months have 31 days?

The months having 30 days in a year are April, June, September, and November. The month is defined as the time from any day of one... View Article

What are the componenets of a vector?

The components of a vector in two dimension coordinate system are usually considered to be x-component and y-component. It can be... View Article

What are consecutive numbers

Consecutive numbers are those numbers that follow each other. They follow in a sequence or in order. For example, a set of natural numbers are... View Article

What is Pi?

Pi is a mathematical concept which represents the ratio between the circumference and the diameter of a circle. The pi value was first calculated... View Article

The time shown in mirror placed in front of clock at 6 :20 is___

Figure 1 is the clock that displays time 5:40. On its left side, a mirror is placed and figure is the reflection figure of the other... View Article

Name a molecule with zero dipole moment

A dipole moment arises in any system in which there is a separation of charge. They can, therefore, arise in ionic bonds as well as in covalent... View Article

Assertion : If the net external force on the body is zero, then its acceleration is zero. Reason : Acceleration does not depend on force. Justify the statements

No, if the net force acting on a body be zero, then the body won’t necessarily be in the rest position. The situation of the net force... View Article

The number of 6 digit numbers that can be formed using the digits 0,1,2,5,7 and 9 which are divisible by 11 and no digit is repeated, is:

If the difference of the sum of alternative digits of a number is divisible by 11, then that number is divisible by 11 completely. In order to... View Article

Convert the ratio 4 :5 to percentage.

To convert fraction to a percent, you just need to multiply the fraction by 100 and reduce it to percent. Here are a few examples that will give... View Article

Assertion: True solution particles show Tyndall effect. Reason: The scattering is directly proportional to size of solution particle. Which of the following statement is right?

The Tyndall effect is the phenomenon in which the particles in a colloid scatter the beams of light that are directed at them. This effect is... View Article

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