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Class 12th Chemistry

In the following sequence of reactions, the final product D is:

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Vishal Baghel

Contributor-Level 10

CrO₃ : mild oxidizing agent

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Class 12th Chemistry

The major product of the following reaction is

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Vishal Baghel

Contributor-Level 10

Kindly consider the following figure

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Class 12th English

Six cities of India – Jammu, Kolkata, Lucknow, Mumbai, Nagpur and Orcha are connected by one way and two way highways as indicated in the diagram given below. The arrow head indicates the direction in which the traffic is allowed to flow. No other route is available except those given in the diagram.

What is the least possible number of cities, a person has to pass through, while travelling from Mumbai city to Lucknow city?

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Payal Gupta

Contributor-Level 10

Following are the possible ways from city Mumbai to city Lucknow.

I. Mumbai – Nagpur – Kolkata –Lucknow

II. Mumbai – Jammu – Orcha – Lucknow

III. Mumbai – Nagpur – Jammu – Orcha – Lucknow

The least possible number of cities is two.

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Class 12th English

For which of the following cities it is not possible for a person to start his journey from the city and pass through all the other cities and come back to the same city, without passing through any city more than once?

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Payal Gupta

Contributor-Level 10

A person can start and return the same city while passing through every city.

So, According to the given data option d is correct

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Class 12th English

In how many different ways can a person travel from Kolkata city to Nagpur city, without passing through any city more than once?

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Payal Gupta

Contributor-Level 10

The following are the possible ways:

I. Kolkata – Mumbai – Nagpur

II. Kolkata – Lucknow – Jammu – Nagpur – Mumbai

There are two possible ways.

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8 months ago

Class 12th English

Directions for questions: Read the information carefully and answer the questions given below.

In how many different ways, can a person travel from Nagpur city to Lucknow without passing through any city more than once?

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Payal Gupta

Contributor-Level 10

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8 months ago

Class 12th Physics

A square shaped wire with resistance of each side $3 Ω$ is bent to form a complete circle. The resistance between two diametrically opposite points of the circle in unit of $Ω$ will be________.

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Raj Pandey

Contributor-Level 9

$R_{e q} = 3 Ω$

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Class 12th Physics Ncert Solutions Class 12th

The voltage drop across $15 Ω$ resistance in the given figure will be_______V.

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Raj Pandey

Contributor-Level 9

$R_{e q} = 6 ?$

$∴ i = \frac{12 v}{6 Ω} \Rightarrow 2 A$ (through battery)

$∴ v_{15 Ω} = 6 V$

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8 months ago

Class 12th Physics

The ratio of the equivalent resistance of the network (shown in figure) between the points a and b when switch is open and switch is closed in x : 8. The value of x is_________.

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alok kumar singh

Contributor-Level 10

When switch is open,

$R_{e q} = \frac{3 R}{2}$

When switch is closed,

$R_{e q}^{'} = 2 * \frac{R * 2 R}{R + 2 R} = \frac{4 R}{3}$

$\frac{R_{e q}}{R_{e q}^{'}} = \frac{3 R / 2}{4 R / 3} = \frac{9}{8} = \frac{x}{8}$

$\Rightarrow x = 9$

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Class 12th English

A company has seven tasks to complete. They are:

T1 – Buy raw material

T2 – Take orders

T3 – Process raw material

T4 – Deliver finish product

T5 – Hire new recruits

T6 – Pay the bills

T7 – Pay salary

And to do these tasks it has only two days, Monday and Tuesday. Certain conditions should be followed:

The Company must do at least two tasks each day.

The company cannot start its task on Monday with T4 (deliver finish product)

Task T1 should be done either in the beginning or at the end of any of the two days. Task T3 and task T7 should be done on the same day with no task done in between them. Task T4 and task T6 cannot be

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Payal Gupta

Contributor-Level 10

Since Task T1 does not have either the first or last Task on Tuesday Task T1 must have the first or last Task on Monday. So, option (a) or option (b) is true but neither one must be true.

On Tuesday since Task T3 is first Task T7 must be second but Task T2 cannot follow Task T7. So Task T2 must have been done on Monday, hence (c) is eliminated. Since Task T4 has to be done on Tuesday Task T6 must have been done on Monday.

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