NEET JEE preparation in coimbatore'

NEET JEE preparation in coimbatore'

This page is started for sharing study materials,online test and questions to the students in Coimba

14/05/2020

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29/04/2020

Three blocks A, B and C of masses 4 kg, 2 kg and 1 kg respectively, are in contact on a frictionless surface, as shown. If a force of 14 N is applied on the 4 kg block, then the contact force between A and B is [CBSE AIPMT 2015]

A) 2 N
(B) 6 N
(C) 8 N
(D) 18 N

29/04/2020

A range of galvanometer is ‘V’, when 50Ω resistance is connected in series. Its range gets doubled when 500Ω resistance is connected in series. Galvanometer resistance is
(A) 100 Ω
(B) 200 Ω
(C) 300 Ω
(D) 400 Ω

20/04/2020

Assertion: Mixture of benzaldehyde and acetaldehyde in hot alkaline medium gives cinnamaldehyde.
Reason: Benzaldehyde is strong electrophile than acetaldehyde.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false

20/04/2020

A stone of mass 0.05 kg is thrown vertically upwards. What is the direction and magnitude of net force on the stone during its upward motion?
(A) 0.98 N vertically downwards
(B) 0.49 N vertically downwards
(C) 9.8 N vertically downwards
(D) 0.49 N vertically upwards

16/04/2020

1. Which part of the ear has no role to play in hearing but is very important

(a) Ear ossicles

(b) Organ of Corti

(c) Eustachian tube

(d) Vestibular apparatus

15/04/2020

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