**591. The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is__________________?**

A. same

**B. double**

C. half

D. four times

E. one fourth

**592. The C.G. of a plane lamina will not be at its geometrical centre in the case of a__________________?**

**A. right angled triangle**

B. equilateral triangle

C. square

D. circle

E. rectangle

**593. An ideal flow of any fluid must fulfil the following:**

A. Newton’s law of viscosity

B. Newton’s law of motion

C. Boundary layer theory

D. Pascals law

**E. Continuity equation**

**594. A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal_________________?**

**A. density of metal can’t be determined**

B. metal is twice as dense as water

C. metal will float in water

D. metal is twice as dense as unknown fluid

E. none of the above

**595. Which of the following is not the unit of energy_________________?**

A. kg m

B. kcal

**C. wattr**

D. watt hours

E. kg m x (m/sec)2

**596. The C.G. of a solid hemisphere lies on the central radius 3r________________?**

A. at distance — from the plane base 3r

B. at distance — from the plane base 3r

C. at distance — from the plane base 3r

**D. at distance — from the plane base or**

E. at distance — from the plane base

**597. Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one___________________?**

A. ellipse

**B. hyperbola**

C. parabola

D. circle

E. none of the above

**598. A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly_________________?**

A. 38 m

**B. 62.5 m**

C. 96 m

D. 124 m

E. 240 m

**599. A perfect gas**

**A. Has zero viscosity**

B. Has constant viscosity

C. Satisfies the relation PV = mRT

D. Is incompressible

E. None of the above

**600. Frictional force encountered after commencement of motion is called ___________________?**

A. post friction

B. limiting friction

C. kinematic friction

**D. frictional resistance**

E. dynamic friction

**NOTE IF YOU THINK ANY OF THE MCQ ABOVE IS WRONG. PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX. THANK YOU**