M.C.Q. [1 Marks Each]

MCQ 11 Mark

A linear equation in one variable has

✓
only one solution
B
no solution
C
two solutions
D
more than two solutions

Answer

Correct option: A.

only one solution

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MCQ 21 Mark

Linear equation in one variable has

A
only one variable with any power
B
only one term with a variable
✓
only one variable with power 1
D
only constant term

Answer

Correct option: C.

only one variable with power 1

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MCQ 31 Mark

The shifting of a number from one side of an equation to other is called

✓
transposition
B
distributivity
C
commutativity
D
associativity

Answer

Correct option: A.

transposition

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MCQ 41 Mark

Which of the following is a linear expression?

A
$x^2+2+y$
B
$y+y^2+3$
C
4
✓
$1+z$

Answer

Correct option: D.

$1+z$

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MCQ 51 Mark

The value of $x$ for which the expressions $(3 x-4)$ and $(2 x+1)$ become equal is

A
$-3$
B
$0$
✓
$5$
D
$1$

Answer

Correct option: C.

$5$

(C) $5$
Hint According to the question,
$3 x-4=2 x+1$
$\Rightarrow \quad 3 x-2 x=1+4\quad$ [transposing -4 to RHS and $2 x$ to LHS]
$\Rightarrow \quad x=5$

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MCQ 61 Mark

If $8 x-13=25+16 x$, then $x$ is

A
$0$
✓
$-\frac{19}{4}$
C
2
D
-4

Answer

Correct option: B.

$-\frac{19}{4}$

(B) $-\frac{19}{4}$
Hint We have,
$8 x-13=25+16 x$
$\Rightarrow \quad 8 x-16 x=25+13\quad$ [transposing $16 x$ to LHS and $-13$ to RHS]
$\Rightarrow \quad-8 x=38$
$\Rightarrow \quad x=\frac{38}{-8} \quad$ [dividing both sides by -8]
$\therefore \quad x=\frac{-19}{4}$

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MCQ 71 Mark

If $a$ and $b$ are positive integers, then solution of the equation $a x=b$ has to be always

✓
positive
B
negative
C
one
D
zero

Answer

Correct option: A.

positive

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MATHS M.C.Q. [1 Marks Each]

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