The work done against gravity in taking 10 kg mass at 1 m height in 1 sec will be ____________.

From the question we have,
Mass $\left(\mathrm{m}\right) = 10 \mathrm{kg}$

Acceleration due to gravity $\left(\mathrm{g}\right) = 9.8 \mathrm{m}/{\mathrm{s}}^2$

Height $\left(\mathrm{h}\right) = 1 \mathrm{m}$

As we know that,

Work done $\left(\mathrm{W}\right) = \mathrm{m}\times \mathrm{g}\times \mathrm{h}$

                         $= 10\times 9.8\times 1 = 98 \mathrm{J}$

Hence, the work done is $98 \mathrm{J}$.