NAT IIP Physical Science Mathematics Preparation Online Test for Pakistani Students

• 0 A
• -25 B
• 5 C
• 45 D

• Free vector A
• Null vector B
• Unit vector C
• None of these D

Sin(a + b) + Sin (a - b) =

• Sin a Cos b A
• Sin a Sin b B
• Sin a + Cos b C
• Sin a - 2 Cos b D

Two matrices A and B are conformable

for multiplication (AB) if and only if

• Both A,B have the same number of columns
  
  A
• Both A and B do not have the same order
  
  B
• Number of col A is same as number of rows of B
  
  C
• Number of rows of A is same as number of col of B
  
  D

If A and B are two events, then P(AUB) = ? (when A and B are disjoint)

• P(A) - P(B) A
• P(A) x P(B) B
• P(A)+P(B) C
• 
  D

Which of the following is the subset of all sets?

• 
  A
• {1, 2,3} B
• 
  C
• {0} D

The direction cosines of y-axis are

• 1,0,0 A
• 0,1,0 B
• 0,0,1 C
• 1,1,1 D

0 (Zero) is

• An irrational number A
• A rational number B
• A negative integer C
• A positive number D

The equation of the normal to the circle x²+ y²= 25 at(4, 3) is

• 3x - 4y = 0 A
• 3x - 4y = 5 B
• 4x + 3y = 5 C
• 4x + 3y = 25 D

• A polynomial A
• An inequality B
• An identity C
• A linear function D

A standard deck of 52 cards is shuffled. What is the probability of choosing the queen of the diamonds

• 1/5 A
• 1/13 B
• 5/52 C
• 1/52 D

If ab > 0 and a < 0, which of the following is negative?

• b A
• -b B
• -a C
• (a - b)² D

The set {{a,b}} is

• Infinite set A
• Singleton set B
• Two points set C
• None D

• 
  A
• 
  B
• 
  C
• None of these D

• 2 A
• 1 B
• 0 C
• 
  D