3
Q:

What color does blue and yellow make?

A) Green B) Black
C) Red D) White

Answer:   A) Green



Explanation:

Mixing of blue and yellow colors make Green Color.

                                 400px-Color_mixture.svg_1521793884.png image

 

RYB (an abbreviation of red–yellow–blue) is a historical set of colors used in subtractive color mixing and is one commonly used set of primary colors. It is primarily used in art and design education, particularly painting.

RYB predates modern scientific color theory, which has determined that cyan, magenta, and yellow are the best set of three colorants to combine, for the widest range of high-chroma colors.

Q:

What is the SI unit of electrical resistance?

 

A) What is the SI unit of electrical resistance? B) Ohm
C) Mole D) Volt
 
Answer & Explanation Answer: B) Ohm

Explanation:
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1 753
Q:

The waves used in radar systems are _______ waves.

 

A) ultraviolet B) infrared
C) micro D) radio
 
Answer & Explanation Answer: D) radio

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3 3555
Q:

The audible range of sound for an average adult human being is ______.

 

A) 2 Hz - 20000 Hz B) 2 Hz - 2000 Hz
C) 20 Hz - 2000 Hz D) 20 Hz - 20000 Hz
 
Answer & Explanation Answer: D) 20 Hz - 20000 Hz

Explanation:
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2 12403
Q:

Which of the following is the SI unit of temperature ?

 

A) Kelvin B) Réaumur scale
C) Candla D) Ampere
 
Answer & Explanation Answer: A) Kelvin

Explanation:
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5 5635
Q:

The lens-type commonly used for correcting presbyoPia is .........

 

A) concave lens B) convex lens
C) bifocal lens D) cylindrical lens
 
Answer & Explanation Answer: C) bifocal lens

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3 3763
Q:

Ultrasonic sounds are the sounds that have frequencies?

 

A) higher than 40 kHz B) higher than 50 kHz
C) higher than 20 kHz D) higher than 30 kHz
 
Answer & Explanation Answer: C) higher than 20 kHz

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3 2421
Q:

The Earth is nearest to the Sun on:

 

A) 4 July B) 23 September
C) 21 March D) 3 January
 
Answer & Explanation Answer: D) 3 January

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2 2588
Q:

The lowest temperature is recorded by:

 

A) Mercurial Thermometer B) Alcohol thermometer
C) Maximum reading thermometer D) Minimum reading thermometer
 
Answer & Explanation Answer: B) Alcohol thermometer

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