The time taken for a radioactive element to reduce to 50% of its original weight is _____________ years, if its half life period is 12 years?

Related Mcqs:

1. The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?

   A. e-ηS B. (T1S + 1)/(T2S + 1) C. (T1S/(T2S + 1) D. (T1S + 1)/(T2S...

2. Thermal conductivity cell is the primary element of a/an _____________ analyser?

   A. Oxygen B. Carbon dioxide C. Carbon monoxide D. Sulphur dioxide...

3. The _____________ of a vapor pressure thermometer is a functioning element?

   A. Pointer B. Bourdon tube C. Bulb D. None of these...

4. Which of the following is never used as an element of industrial resistance thermometer ?

   A. Lead B. Nickel C. Copper D. 30% iron + 70% nickel...

5. The ______________ of a vapor pressure thermometer is a primary element?

   A. Pointer B. Bourdon tube C. Bulb D. None of these...

6. Which of the following is not a mechanical pressure sensing element ?

   A. Bellows B. Diaphragm C. Bourdon tube D. U-tube...

7. The ____________ of a vapor pressure thermometer is a secondary element ?

   A. Pointer B. Bourdon tube C. Bulb D. None of these...

8. Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an ?

   A. Insulator B. Conductor C. Solid semi-conductor D. Liquid semi-conductor...

9. The ____________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature ?

   A. Pressure B. Volume C. Viscosity D. All A., B. and C....

10. The pressure sensing element of elastic type pressure gauge is never made in the form of a_________________?

    A. Bellow B. Diaphragm C. Strip D. Bourdon tube...