Class 12th

Given below are two statements.

           Statement I: During electrolytic refining, blister copper deposits precious metals.

           Statement II: In the process of obtaining pure copper by electrolysis method, copper blister is used to make the anode.

           In the light of the above statements, choose the correct answer form the option given below:

The value of $2sin\left(\frac{\pi }{8}\right)sin\left(\frac{2\pi }{8}\right)sin\left(\frac{3\pi }{8}\right)sin\left(\frac{5\pi }{8}\right)sin\left(\frac{6\pi }{8}\right)sin\left(\frac{7\pi }{8}\right)is:$

The following bar chart gives the increase in  internet user percentage of villages, towns and cities in the four states for the period between 2018-19 and 2020-21. The table provides information about the number of households who uses internet, average expenditure by a household and growth on expenditure on internet by a household.

The average income for the Tamil Nadu in 2020-21 was

If the value of the integral ${\displaystyle \underset{0}{\overset{5}{\int }}\frac{x+\left[x\right]}{e^{x-\left[x\right]}}dx=\alpha e^{-1}+\beta ,}$  where $\alpha ,\beta \epsilon R,5\alpha +6\beta =0,$  and [x] denotes the greatest integer less than or equal to x; then the value of ${\left(\alpha +\beta \right)}^2$ is equal to

The following bar chart gives the increase in  internet user percentage of villages, towns and cities in the four states for the period between 2018-19 and 2020-21. The table provides information about the number of households who uses internet, average expenditure by a household and growth on expenditure on internet by a household.

The total expenditure on the internet in the cities than the town increased by how much percentage in year 2018-19?

The following bar chart gives the increase in  internet user percentage of villages, towns and cities in the four states for the period between 2018-19 and 2020-21. The table provides information about the number of households who uses internet, average expenditure by a household and growth on expenditure on internet by a household.

What is the percentage increase in total numbers of households that uses internet in towns of  Tamil Nadu's over the given periods ?

Directions: Answer the questions based on the following Information.

The following bar chart gives the increase in  internet user percentage of villages, towns and cities in the four states for the period between 2018-19 and 2020-21. The table provides information about the number of households who uses internet, average expenditure by a household and growth on expenditure on internet by a household.

What was the total households expenditure on internet in  towns of Tamil Nadu's town who uses internet?

The domain of the function cosec^-1   $\left(\frac{1+x}{x}\right)is:$

Let [t] denote the greatest integer less than or equal to t.

Let f(x) =  $x-\left[x\right],g\left(x\right)=1-x+\left[x\right],andh\left(x\right)=min\left\{f\left(x\right),g\left(x\right)\right\},x\in \left[-2,2\right]$

Then h is:

The first table gives the percentage of employees in skyroot, who work in the department of finance marketing and software. The second table gives the average starting salaries of the employees per month (Rs. in thousands) in these. The line graph gives the no. of employees who are working for Skyroot each year.

 

In 2018 employees working in finance department earned more than those working for software (per annum)?