MEASUREMENT/UNIT

MEASUREMENT/UNIT

Total Questions: 52

31. One micron is equal to - [39th B.P.S.C. (PRE)1994]

Correct Answer: (c) 1/1000mm
Solution:1 Micron =10⁻⁶
=10⁻⁶×10³mm
=1/10³mm
=1/1000mm.

32. One micron represent a length of - [U.P.P.C.S (Mains) 2011]

Correct Answer: (b) 10⁻⁴cm
Solution:One micron represents a length of 10⁻⁶ m. It is represented by µ sign
1 micron = 0.000001 m=0.0001 cm

33. Which one of the following is not correctly matched? [U.P.P.S.C.S.(SPL) (MAINS) 2004 ,U.P.P.S.C. (PRE) 2001]

List-1List-2
DecibelUnit of sound intensity
HorseUnit of power
Nautical milesUnit of naval distance
CelsiusUnit of heat

 

Correct Answer: d)
Solution:Celsius is a scale and unit of measurement for temperature. Heat is measured in calories. Nautical mile is measured the distance at sea and equal to 1.852 km. Horse power is measured by power, 1 horse power is equal to 746 watts. Decibel is used to measure the sound intensity.

34. Which one of the following is not the unit of heat? [M.P.P.S.C.S.(PRE)2016]

Correct Answer: (d) Watt
Solution:The watt is a derived unit of power in the international system of units ( SI). Rest of all are the units of heat.

35. Which one of the following is not the unit of heat? [U.P.R.O/A.R.O. (PRE)2017]

Correct Answer: (a) Centigrade
Solution:The most commonly used scales temperature are Centigrade scale ,Fahrenheit scale and Kelvin scale. While the calorie ,erg and joule are the units of heat energy. Heat is a form of energy.

36. A distance of 1 km means - [45th B.P.S.C. (PRE) 2001]

Correct Answer: (c) 1000 m
Solution:The SI unit of distance is metre.

1 km is equal to 1000 m.

1 m equal to 100 cm.

37. One pikogram is equal to - [42th B.P.S.C. (PRE) 1997]

Correct Answer: (c) 10⁻¹² gram
Solution:The smallest unit of measuring the mass are Pikogram, Femtogram, Milligram, Microgram.

1 pikogram is equal to 10⁻¹² gram.

38. Pascal is the unit of measuring : [Uttarakhand P.C.S. (PRE)2002]

Correct Answer: (b) Pressure
Solution:The pascal is the unit of pressure in the international unit (SI).
1(Pa)=1newton/metre²=1kgm⁻¹s⁻².

39. What is the unit of pressure ? [64th B.P.S.C.(PRE) 2018]

Correct Answer: (a) Newton/metre.sq
Solution:The pascal is the unit of pressure in the international unit (SI).
1(Pa)=1newton/metre²=1kgm⁻¹s⁻².

40. What is the unit of pressure ? [65th B.P.S.C. (PRE) 2019]

Correct Answer: (d) None of the above
Solution:kg/cm², kg/cm, kg/mm are not the correct expression for pressure and it should be kgf/cm² equals 98066.5 pascals.