1.

Mass of human DNA molecule is 1 fg. It may be expressed in kilogram as :

Answer»

`1 xx 10^(-12 ) kg `
`1 xx 10^(-15) kg`
`1 xx 10^(-18) kg `
`1.8 xx 10^(-9) kg `

Solution :`1fg = 10^(-15) G`
`1 = (10^(-15) g)/(1 fg)`
Now ` 1G = 10^(-3) kg `
`1 = (10^(-3) g)/(1g)`
` 1fg= 1 fg xx ( (10^(-15) g)/(1fg) ) xx ( (10^(-3) kg)/(1g) )`
`= 10^(-18) kg `


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