Entri Career Fest- Up to 50% Off on In-demand Courses ✦ 12,000 Government Jobs Secured ✦ 5,000+ Private Job Placements ✦ 4.9 ⭐️ Google Play Store Rating✦ +++

Get Ahead with Our Exam Q&A

Explore our extensive collection of questions and answers to enhance your learning experience and prepare for exams effectively

Gunpowder consists of a mixture of nitrate, sulphur and charcoal.
It is a mixture of three component that can be separated easily so gun powder is a heterogeneous mixture.
Gunpowder burns very rapidly.

Because at higher altitudes the pressure is less.

Lightning is an electrical discharge that occurs in the atmosphere, and it travels at the speed of light, which is approximately 299,792,458 meters per second.
Thunder, on the other hand, is the sound produced by the rapid expansion of air that occurs as a result of the lightning discharge.
It travels at a much slower speed than light, which is approximately 343 meters per second.
The reason why we see lightning before we hear thunder is that light travels much faster than sound, and therefore it reaches our eyes before the sound reaches our ears.
The time interval between seeing the lightning and hearing the thunder can be used to estimate the distance of the lightning strike, as sound travels at a constant speed and the distance can be calculated using the formula distance = speed x time.

A. There is a vacuum inside the electric bulb. When the bulb is broken air rushes in at great speed from all sides to fill the vacuum. The rushing of air produces a noise generally referred to as a ‘bang’.

The blue color of the sky is caused by the scattering of sunlight off the molecules of the atmosphere. This scattering, called Rayleigh scattering, is more effective at short wavelengths (the blue end of the visible spectrum). Therefore the light scattered down to the earth at a large angle with respect to the direction of the sun’s light is predominantly in the blue end of the spectrum.

Clouds trap heat being reflected from the earth. But on clear nights, heat escapes from earth. That is why cloudy nights are warmer than clear nights.

Newton’s third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.

In 1954, language FORTRAN was invented at IBM by a team led by John Backus; it was the first widely used high level general purpose programming language to have a functional implementation, as opposed to just a design on paper.

A spherometer is an instrument for the precise measurement of the radius of curvature of a sphere or a curved surface. Originally, these instruments were primarily used by opticians to measure the curvature of the surface of a lens.

Lead and lead dioxide, the active materials on the battery’s plates, react with sulfuric acid in the electrolyte to form lead sulfate. The lead sulfate first forms in a finely divided, amorphous state, and easily reverts to lead, lead dioxide and sulfuric acid when the battery recharges.

Get Expert Advice for Free: Register for Your Free Consultation Now!

Full Name

Phone Number

Select Language

Select Course

[honeypot honeypot-100]