MP Police SI (Technical) Mock Test - 6 - MP Police SI MCQ

Let the original speed of the car is km/hr. 

Then, time taken in moving km hr

If speed is going km/hr more  

Then, time taken in moving km hr

or

If is not true because the speed is not negetive.

So, speed is km/hr.

Given:

of

and unpaired electron is present in .

Given,

R₀ = 40.0 Ω

R_T = 94.6Ω

T₀=30 ºC

As we know,

R_T = R₀ [1+ α (T-T₀)]

⇒94.6Ω = 40Ω [1 + 3.92 ×10^-3 (T–30ºC)]

⇒2.365 = [1 + 3.92 ×10^-3(T–30ºC)]

⇒1.365 = 3.92 ×10^-3 (T–30ºC)

⇒211ºC = T–30ºC

⇒T = 241ºC

Given,

We want four-letter combinations. So we just need now letters.

SELECT Combination

SELECT and ARRANGE Permutation

Now in the remaining letters, there are two K's. So now there are possibilities

- Take two K's and the third letter can be from remaining

alphabets So possible combinations OR

- Take one and the two letters can be from remaining

alphabets So possible combinations OR

__ - No and three letters can be from remaining alphabets So possible combinations OR

Total combinations ways

Extremely high temperatures are measured with an absolute radiative thermometer. The absolute irradiance thermometer is based on Stephen's law. According to this law, the energy (E) radiated by a black body is proportional to the fourth power of the absolute temperature (T), i.e.,

Where (s) is a constant.

For temperature measurement, the radiation of a hyperthermal object from a lens or mirror is focused on one end of the pair of temperature differences, it generates energy. If the constant is known, then the temperature can be calculated by the above equation.

Natural rubber is a polymer of isoprene. A polymer is an organic compound with a very high molecule volume. This results in the polymerization of many more units of simple molecules, called monomers.

Given:

Length of road = 1200 m

Time taken to cross a road = 10 min

Formula Used:

Speed =

Speed km/hr

∴ The speed of the person is 7.2 km/hr.

The number of ways in which r distinct objects can be selected from a group of distinct objects, is:  

There are a total of 4 ingredients. A salad can be made by using any combination of all or some of these.

The required number of possibilities is:

(Number of salads with 1 ingredient) (Number of salads with 2 ingredients) Number of salads with 3 ingredients) Numer of salads with 4 ingredients)

Given,

Object Temperature

As we know,

As given, increase in temperature to

In Kelvin, increase in temperature to

The resulting increase in its absolute temperature = 

= 150 K

Given:

Price of 20 pens and 35 notebooks = Rs. 1100

The average price of a pen = Rs. 13

Total price of 20 pens = 13 × 20 = Rs. 260

Let the average cost of a notebook be Rs. x.

According to the question,

⇒ 260 + 35x = 1100

⇒ 35x = 1100 – 260 = 840

⇒ x = = 24

Therefore, the average price of a notebook is Rs. 24.

As given, slabs and are of the same length and same crossectional area are at steady state.

for slab .....(i)

for slab .....(ii)

From equation (I) and (ii), we get

or,

The boat moves in the opposite direction of the stream to the person. And its speed in the direction of the stream is

According to the given formula,

Speed of boat in calm water

Speed of boat in calm water

Given:

The difference between the two different numbers is .

The smallest fraction is .

Let the larger number be

Now,

So, the larger fraction

∴ is the larger fraction.

Given:

5, 6, 7, 8, 9 are the digits to form 3 digit number

Calculation:

Let us take the 3digit number as H T U (Hundreds, tens, unit digit) respectively

To make 3 digit number as odd

5, 7, 9 are only possibly be used in the unit digit place

In hundreds and tens place all 5 digits are possible

Number of ways for unit digit = 3

Number of ways for tens digit = 5

Number of ways for hundreds digit = 5

Number of 3 digits odd number = 3 × 5 × 5 = 75

∴ 75 Three-digit odd numbers can be formed from the digits 5, 6, 7, 8, 9 if the digits can be repeated.

As we know radius is always perpendicular to the tangent at the point of contact i.e. .

Now, applying Pythagoras theorem in ,

cm

Therefore length of is cm

Given:

Number

Average

Average

The value of is .

Given:

14.28% of 630 + 32% of ? = 202

⇒  × 630 +  × ? = 202

⇒ 90 +  × ? = 202

⇒  × ? = 112

⇒ ? = 112 × 

⇒ ? = 350

∴ 350 should come in place of the question mark (?).

Total salary from Jan. to June

Total salary from July to September

Average salary from Oct. to Dec. Avg. salary from July to Sep.

Total salary from Oct. to Dec.

Monthly average salary of Sanjay

Monthly average salary of Sanjay = Rs. 12875

Given:

Each atom of copper contributes 1 free electron Density of copper

Diameter of copper wire

Current flowing from the wire

Number of atoms of copper will be

We know that density is equals to mass per unit volume. So

Volume

So will be

Area

We know that drift velocity , where is current, is area.

By substituting the values we get-

Given,

The departure time of the train is on th June .

Now, let's count the time duration,

On th June , till hours

On st July , till hours

On nd July , till hours and minutes

So, the total travel time from Bengaluru to Guwahati is hours minutes hours and minutes.

Carbon tetrachloride molecule has zero dipole moment even though C and Cl have different electronegativities and each of the C - Cl bond is polar and has some dipole moment. This is because the individual dipole moments cancel out because of the symmetrical tetrahedral shape of the molecule.

Given,

Radius cm

As we know,

Area of the circle

Area of the circle

cm

In the word '', we treat the vowels as one letter.

Thus, we have .

This has letters of which occurs times and the rest are different.

Number of ways of arranging these letters

Now, vowels in which occurs times and the rest are different, can be arranged in

Required number of ways

A. Latex is a colloidal solution of rubber particle which are negatively charged not positively charged. Rubber is obtained by coagulation of latex.

B. Tyndall effect can be used to distinguished between a colloidal solution and a true solution . Tyndall effect is shown by colloidal solution while true solution does not show Tyndall effect.

C. It is possible to cause artificial rain by throwing electrified sand carrying charge opposite to the one on clouds from an aeroplane. This is because clouds are aerosols having small droplets of water suspended in it and has some charge. On spraying electrified sand carrying opposite charge to the one on clouds results in coagulation of water particles which leads to rain.

D. Lyophilic solution can be coagulated by adding on electrolyte in large quantities because of hydration of colloidal particles in lyophilic solution.

Glycine is more acidic than basic. Instead of value, the second given value is corresponding to the value .

Thus, overall ionization constant,

Thus,

Here, we first have to select 9 students from 17 students.

Tip:

SELECT Combination

SELECT and ARRANGE Permutation

Arrange students in circle ways students remain.

Arrange remaining students in another circle ways

Total ways to arrange students in circles

Given:

Sayma reaches bus stand at am

The previous bus has left at am as per her watch,

Zeenat's watch is minutes fast

So, the right time when previous bus has left is am minutes am

The frequency of bus is every minutes

Thus, the next bus is come at am minutes am

Sayma has to wait to catch the next bus am am minutes

(A)

In this equation, is reducing chlorine from to .

(B) In this equation, is reducing iodine from 0 to .

In (A) reduction of occurs so it will be a oxidising agent hence will be a reducing agent.

In (B) reduction of I₂ occurs so it will be a oxidising agent and will be a reducing agent.