Question # 1

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Gooch crucible is made of :

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Brass.

Porcelain.

Bronze.

Gold.

A quadratic equation in x is an equation that can be witten in the form

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ax²+ b = 0

ax³ +b²+c=0

ax² +bx+c=0

ax³ +bx³+cx=0

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Name the property used in 4.1 + (-4.1) = 0

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Additive inverse

Multiplication inverse

Additive identity

Multiplication identity

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y : x

x : y

-y : x

-x : y

If Sn is a definite number as n → ∞,then the geometric series is

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Convergent

Divergent

Oscillatroy

None of these

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both a & c

The angle between the vectors 3i + j - k and 2i - j + k is

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(-1, 2)

(-1, 1)

(1, 2)

{-1}

The middle term of the expansion (1 + 2x)⁶is ______

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1st term

4th term

2nd term

5th term

Tan^-11/x = ______

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sin x

sec^-1X

cot^-1X

None of these

General solution of tan 5θ= cot 2θis

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The general term in the expansion of (a+x)n is

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(r-1)th term

(r+1)th term

rth term

none

f (x) = | x | is a/an

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Injective function

Bijective function

Surjective function

Implicit function

Matrix multiplication is

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Commutative

Not commutative

Not associative

Not distributive

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8

1/56

56

None of these

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tan(cot^-1x) is equal to

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cot(tan^-1x)

tan x

secon x

None of these

Given two independent event A and B such that P(A) = 0.30 and P(B) = 0.60. Probability of getting neither A nor B is

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0.28

0.13

0.12

0.42

The term involving x⁴in the expansion of (3 - 2x)⁷is

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120

1512

1250

15120

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The roots of the equation will be irrational if b²- 4ac is

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Positive and perfect square

Positive but not a perfect square

Negative

Zero

The sum of an indicated number of terms in a sequence is called

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sequence

progression

Series

Mean

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Every natural number is

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A prime number

An irrational number

An integer

An even number

If the trace of matrix A is 5, then the trace of the matrix 3A is

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3/5

5/3

8

15

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If n(X) = 18, n(X∩Y) = 7, n(X∪ Y) = 40 then n(Y) =

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1

12

5

29

An expression involving any of the symbols <,>,< or > is called

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equation

inequality

linear equation

identity

(0.90)^1/2is equal to

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0.99

0.90

0.80

0.88

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