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All posts related to Science

Santosh Vishwanathan
Shared from BITSAT Mock - 14 on May 26, 2020 3:20 PM

A body of mass 10 kg is projected upward with an initial velocity of 10 m/s and at an angle of 45o horizontally. When the body reaches to its maximum height, it collides with another body of mass 10 kg, thrown vertically upward from the ground with a velocity of 10 m/s. If the collision was purely inelastic, then what will be the vertical component of velocity of the combined mass after the collision?

 
m/s
m/s
m/s
m/s
None of these
Please type your answer before submitting.
Santosh Vishwanathan

How is 5 root((1/root2)2 (1/root2)2)= 5/2???? it should be five itself which will give the answer as 5/root(2) not 5/2

Immadi Sreetarun
Shared from NEET Mock - 23 on May 24, 2020 11:31 AM

Salicylic acid is prepared from phenol by:

 
Reimer-Tiemann reaction
Williamsons`s synthesis
Kolbe electrolysis reaction
None of the above
Please type your answer before submitting.
Vikash Kumar

The industrial preparation of salicylic acid is carried out by Kolbe-Schmitt reacion

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Marx Louis
Shared from Plant Kingdom on Apr 24, 2020 2:06 PM

Which of the following properties do the cone bearing shoots of field horsetail possess?

a. They are non-photosynthetic.
b. They are photosynthetic.
c. They are branched.
d. They are unbranched.

 
a and d
a and c
b and c
b and d
#
Please type your answer before submitting.
Marx Louis

Are n't they branched?......Equisetum has branches

Kashish Priya Shrivastava
Shared from Classification of Elements on Apr 21, 2020 11:23 PM

Energy of 24.6 eV is required to remove the first electron from a helium atom. The total energy (in eV) required to remove both the electrons from He atom would be

 
38.2
49.2
54.4
79.0
Please type your answer before submitting.
Kashish Priya Shrivastava

Can I get the solution for this question

Chaitanya Krishna
Shared from Hydrocarbons - 2 on Mar 30, 2020 8:19 PM

The correct order of heat of hydrogenation of the following compounds is:

 
(A) > (B) > (C)
(A) > (C) > (B)
(C) > (B) > (A)
(B) > (C) > (A)
Please type your answer before submitting.
Chaitanya Krishna

How we can say 1 st is antiaromatic