  Filter By

## All Questions

#### When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?Option: 1 G1/S Option: 2 G2/M   Option: 3 M Option: 4 Both G2 M and M

G2/M should be activated as the cell has stalled DNA replication fork.

Option 2

## Crack CUET with india's "Best Teachers"

• HD Video Lectures
• Unlimited Mock Tests
• Faculty Support 150

#### If  for  then Option: 1 Option: 2 Option: 3 Option: 4 Use

Correct Option (3)

## Crack NEET with "AI Coach"

• HD Video Lectures
• Unlimited Mock Tests
• Faculty Support Option d

#### The following system of linear equations   has  Option: 1 infinitely many solutions, satisfying Option: 2 infinitely many solutions, satisfying Option: 3 no solution Option: 4 only the trivial solution.

System of Homogeneous linear equations - If ? ≠ 0, then x= 0, y = 0, z = 0 is the only solution of the above system. This solution is also known as a trivial solution.

If ? = 0, at least one of x, y and z are non-zero. This solution is called a non-trivial solution.

Explanation: using equation (ii) and (iii), we have  This is the condition for a system have Non-trivial solution.

-  so infinite non-trivial solution exist

now equation (1) + 3 equation (3)

10x - 20z = 0

x = 2z

Correct Option 2

## Crack JEE Main with "AI Coach"

• HD Video Lectures
• Unlimited Mock Tests
• Faculty Support #### Let If then :    Option: 1 Option: 2 Option: 3 Option: 4 Elementary row operations -

Elementary row operations

Row transformation: Following three types of operation (Transformation) on the rows of a given matrix are known as elementary row operation (transformation).

i) Interchange of ith row with jth row, this operation is denoted by ii) The multiplication of ith row by a constant k (k≠0) is denoted by iii) The addition of ith row to the elements of jth row multiplied by constant k (k≠0) is denoted by In the same way, three-column operations can also be defined too.

- Correct Option (3)

#### Let denote the greatest integer and Then the function, is discontinuous, when x is equal to:  Option: 1 Option: 2 Option: 3 Option: 4   Correct Option (1)

## Crack CUET with india's "Best Teachers"

• HD Video Lectures
• Unlimited Mock Tests
• Faculty Support #### Let be such that the equation, has a repeated root , which is also a root of the equation, . If is the other root of this equation, then is equal to: Option: 1 Option: 2 Option: 3 Option: 4 Nature of Roots -

Let the quadratic equation is ax2 + bx + c = 0

D is the discriminant of the equation.

iii) if roots D = 0, then roots will be real and equal, then -

ax2 – 2bx + 5 = 0 having equal roots or and  Put in the second equation  Correct Option 2

#### In the expansion of , if is the least value of the term independent of  when  and is the least value of the term independent of  when , then the ratio is equal to :  Option: 1 Option: 2 Option: 3 Option: 4 General Term of Binomial Expansion

Term independent of x: It means term containing x0,

Now,

Correct option 1  