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Science quiz

Smell of ethene is-

Pungent
Rotten Egg
Sweet
Minty

SI unit of luminous intensity is-

Newton
Candela
Pascal
Ampere

Major component of biogas is-

Methane
Nitrogen
Hydrogen
Carbon Dioxide

Which of the following is irrational?

√4
3√8
√100
-√0.64

The mean of n observations is 42. If each observation is decreased by 12, then find the new mean.

3
15
30
54

Condition for addition of matrices is-

Elements should be equal
Number of rows should be equal
Number of columns should be equal
Order should be equal

Condition for multiplication of matrices is-

Elements should be equal
Order should be equal
Number of columns of 1st matrix = Number of rows of 2nd matrix
Number of rows of 1st matrix = Number of columns of 2nd matrix

Size of the resultant matrix after multiplication is-

Number of columns of 1st matrix and Number of rows of 2nd matrix
Number of rows of 1st matrix and Number of columns of 2nd matrix
Both options above
None of these

1 kgf =

100 dyne
980665 dyne
970666 dyne
980 dyne

Transpiration is inversely proportional to-

Temperature
Wind speed
Humidity
Wind direction

Small quiz