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Class 12th

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6 months ago

Class 12th Physics Wave Optics

A car is moving towards a stationary observer at a speed of 108 km/hr. The speed of sound is 330 m/s. If the observer hears the frequency of horn as 550 Hz, what frequency will he hear after the car has passed?
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V
Vishal Baghel

Contributor-Level 10

v = 1 0 8 * 5 1 8 = 3 0 m / s

f 1 = C C − v f 0

f = 3 3 0 3 3 0 + 3 0 * 5 0 0 = 3 3 3 6 * 5 0 0 = 5 5 0 0 1 2

New answer posted

6 months ago

Class 12th Chemistry Electrochemistry

The purpose of salt bridge is to:
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Vishal Baghel

Contributor-Level 10

ion flow only   

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6 months ago

Class 12th Chemistry

The principle involved in paper chromatography is:
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V
Vishal Baghel

Contributor-Level 10

Partition   

New answer posted

6 months ago

Class 12th Coordination Compounds

For which of the following complexes is the order of values of Δ0 correct?
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Vishal Baghel

Contributor-Level 10

3d => 4d => 5d CFSE increases for the same ligands.

New answer posted

6 months ago

Class 12th Chemistry

Which of the following curves is in accordance with Freundlich adsorption isotherm?
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Vishal Baghel

Contributor-Level 10

Kindly consider the following figure

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6 months ago

Class 12th Chemistry

Which of the following is an example of Stephen reaction?
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Vishal Baghel

Contributor-Level 10

Reduction of alkyl cyanide using SnCl2 and HCl is called as Stephen reduction reaction.

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6 months ago

Class 12th Solutions

Consider a solution consisting of the following two buffer systems.
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Vishal Baghel

Contributor-Level 10

At pH = 6.4

As in case of H2CO3,

pH = pKa it will be only when

[weak acid] = [conjugate base].

In case of 2

H2PO-4 |HPO2-4

New answer posted

6 months ago

Class 12th Solutions

Which of the following statement is true for an ideal solution?
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Vishal Baghel

Contributor-Level 10

Solute and solvent both should obey Raoult's law

New answer posted

6 months ago

Class 12th Chemistry

What would be the major products of the following reaction?
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V
Vishal Baghel

Contributor-Level 10

Kindly consider the following figure

New answer posted

6 months ago

Class 12th Chemistry

The structure given below is a general structure of a drug used as:
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V
Vishal Baghel

Contributor-Level 10

This is the general structure of penicillin drug which is used as antibiotic drugs.

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