MCQ
Mass and energy are conserved is demonstrated by
- AFirst law of thermodynamics
- BLaw of conservation of energy
- CLaw of conservation of mass
- ✓Modified form of 1st law of thermodynamics
✓
Answer
Correct option: D.
Modified form of 1st law of thermodynamics
(d) It is a modified form of 1st law of thermodynamics. It is a conservation law of mass and energy.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A certain amount of $H_2CO_3$ & $HCl$ are dissolved to form $1$ litre solution. At equilibrium it is found that concentration of $H_2CO_3$ & $CO_3^{-\,-}$ are $0.1\,M$ & $0.01\,M$ respectively. Calculate the $pH$ of solution. Given that for $H_2CO_3$ $K_{a_1} =10^{-5}$ & $K_{a_2} =10^{-8}$
→Assertion : For Balmer series of hydrogen spectrum, the value $n_1 = 2$ and $n_2 = 3, 4, 5.$
Reason : The value of $n$ for a line in Balmer series of hydrogen spectrum having the highest wave length is $4$ and $6$.
→Reason : The value of $n$ for a line in Balmer series of hydrogen spectrum having the highest wave length is $4$ and $6$.
Choose the pair of species in which oxidation number of nitrogen is same
Which of the following benzene ring is most reactive towards electrophile $({E^ \oplus })$ ?
→Relation between given pair is :
Identify incorrect order of heat of hydrogenation $(HOH)$
→The $UPAC$ name of the compound $C{H_2} = CH - C{H_2} - C{H_2} - C \equiv CH$ is
→The formula of a gaseous hydrocarbon which requires $6$ times of its own volume of $O _{2}$ for complete oxidation and produces $4$ times its own volume of $CO _{2}$ is $C _{ x } H _{ y }$. The value of $y$ is ...... .
→$6.02 \times 10^{20}$ molecules of urea are present in $200\,mL$ of its solution. The concentration of urea solution is .............. $\mathrm{M}$
→What is the shape of the $ClF_3$ molecule?
→