Science Student Questions

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by JOSEPH PREM ZURISHADDAI RAJ · Class 4

Jeshua cut his finger slightly. After a few days, a hard covering formed over the cut before the new skin grew. What is it called?

Science Other 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

Which animal connective tissue houses mature chondrocytes inside structural cavities called lacunae?

Science Other 0 1 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

Which component represents the only living cellular element found within complex Xylem tissue?

Science Cell � The Fundamental Unit of Life 0 1 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

Which living plant tissue features structural pectin thickening at cell corners to provide flexible support?

Science Other 0 1 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

Which process causes a red blood cell to shrink and crenate when placed in a hypertonic salt solution?

Science Atoms and Molecules 0 1 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

What structure fails to form during plant cell cytokinesis if the Golgi apparatus is chemically inhibited?

Science Cell � The Fundamental Unit of Life 0 1 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

A particle moves along a straight line so that its displacement s (in metres) at time t (in seconds) is s = t³ - 6t² + 9t + 4. What is the velocity of the particle when its acceleration becomes zero?

Science Motion 0 0 answers 0%
by RAJANYA MONDAL · Class 7

What is known as the guardian of genome?

Science Other 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

An astronaut on a newly discovered planet drops a small 2 kg sphere from a height of 20 m. It takes exactly 4 seconds to hit the ground. The planet is perfectly spherical with a radius equal to half of the Earth's radius. Assuming no air resistance, what is the ratio of the mass of the planet to the mass of the Earth? (Take g on Earth = 10 m/s²)

Science Other 0 0 answers 0%
by RAJANYA MONDAL · Class 7

What is another name for an intrinsic membrane protein?

Science Other 0 0 answers 0%
by RAJANYA MONDAL · Class 7

What is the main function of the Smooth Endoplasmic Reticulum (SER)?

Science Other 0 0 answers 0%
by RAJANYA MONDAL · Class 7

What is the main function of the Rough Endoplasmic Reticulum (RER)?

Science Other 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

Two bodies with masses M1 and M2 are separated by a distance R, and the gravitational force between them is F. If the mass of the first body is doubled, the mass of the second is halved, and the distance between their centres is reduced to R/2, what will be the new gravitational force?

Science Atoms and Molecules 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

A sonar device on a submarine sends an ultrasound signal into the ocean. The signal reflects off an underwater reef and is detected by the submarine's receiver exactly 2.4 seconds later. If the speed of sound in seawater is 1500 m/s, how far away is the reef from the submarine?

Science Gravitation 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

An element has an atomic number of 13 and a mass number of 27. How many neutrons are present in the nucleus of this atom?

Science Structure of Atom 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

An object of mass 2 kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal table. What is the net force required to keep the object moving with the same velocity?

Science Force and Laws of Motion 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

The value of the Universal Gravitational Constant (G) was first experimentally determined by:

Science Gravitation 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

A ball is thrown vertically upwards. At the highest point of its trajectory, its velocity and acceleration are:

Science Gravitation 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

The gravitational force between two objects depends on the product of their masses and:

Science Gravitation 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

An object weighs 60 N on Earth. What will be its approximate weight on the Moon?

Science Gravitation 0 0 answers 0%

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