Class 12th

The line graph given below shows the marked price, selling price and cost of manufacturing of an aircraft  (in crore).

What is the maximum discount the company has given to a customer in any year?

During halogens test, sodium fusion extract is boiled with concentrated HNO₃ to

Given below are two statements: one is labeled as Assertion A  and the other is labeled as Reason R.

           Assertion A:  A mixture contains benzoic acid  and naphthalene. THE pure benzoic acid can be separated out by the use of benzene.

           Reason R: Benzoic acid is soluble in hot water.

           In the light of the above statements, choose the most appropriate answer form the options given below:

The metal ion (in gaseous state) with lowest spin-only magnetic moment value is

The line graph given below shows the marked price, selling price and cost of manufacturing of an aircraft  (in crore).

Which of the following year has the highest profit if the aircraft is sold at marked price?

The line graph given below shows the marked price, selling price and cost of manufacturing of an aircraft  (in crore).

In which year is the total increase in the selling price highest as compared to last year's selling price ?

Directions: Answer the questions based on the following Graph.

The line graph given below shows the marked price, selling price and cost of manufacturing of an aircraft  (in crore).

In which year, company records the highest profit on an aircraft?

A plane P contains the line x + 2y + 3z + 1 = 0 x – y – z – 6, and is perpendicular to the plane -2x + y + z + 8 = 0. Then which of the following points lies on P?

Let $\theta \in \left(0,\frac{\pi }{2}\right).$ $\frac{}{}$ If the system of linear equations.

$\left(1+co{s}^2\theta \right)x+si{n}^2\theta y+4sin3\theta z=0$

$co{s}^2\theta x+\left(1+si{n}^2\theta \right)y+4sin3\theta z=0$

$co{s}^2\theta x+si{n}^2\theta y+\left(1+4sin3\theta \right)z=0$

has a non trivial solution, then the value of is: