List of top Chemistry Questions asked in Rajasthan PMT

300 cal of heat is supplied to raise the temperature of 50 g of air from 20∘C 20{}^\circ C to 30∘C 30{}^\circ C without any change in its volume. Change in internal energy per gram of air is
In HCOO− HCO{{O}^{-}} , the two carbon-oxygen bonds are found to be of equal length. What is the reason for this?
Which of the following has highest ionization enthalpy?
The product formed as a result of reaction of CH3MgBr C{{H}_{3}}MgBr and CO2 C{{O}_{2}} , on further hydrolysis gives
The monomer units of starch are
How many ions are produced from [Co(NH3)6]Cl3 [Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}} in solution?
How many bonds are there in
EDTA has coordination number
During smelting an additional substance is added which combines with impurities to form a fusible product which is known as
The colloidal system in which the disperse phase and dispersion medium are both liquids is known as
Isotonic solutions are the solutions having the same
Which of the following is used to make non-stick cookware?
The units of conductivity are
Nylon-6 is made from
An example of water soluble vitamin is
Which of the following is not an ore of magnesium?
The heat of formation of CO(g) CO(g) and CO2(g) C{{O}_{2}}(g) are ΔH=−110 \Delta H=-110 and ΔH=−393  kJ  mol−1 \Delta H=-393\,\,kJ\,\,mo{{l}^{-1}} respectively. What is the heat of reaction (ΔH) (\Delta H) (in kJ  mol−1) kJ\,\,mo{{l}^{-1}}) for the following reaction? CO(g)+12O2(g)→CO2(g) CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}C{{O}_{2}}(g)
Adipic acid on heating form
In the respect of the equation k=Ae−Ea/RT k=A{{e}^{-{{E}_{a}}/RT}} in chemical kinetics, which one of the following statements is correct?
Which of the following can give a Grignard reagent when reacted with magnesium in dry ether?
The coordinates of a moving particle at any time t are given by x=αt3 x=\alpha {{t}^{3}} and y=t3. y={{t}^{3}}. The speed of the particle at time t is given by
A  0.5  g/L A\,\,0.5\,\,g/L solution of glucose is found to be isotonic with a 2.5  g/L 2.5\,\,g/L solution of an organic compound. What will be the molecular weight of that organic compound?
t− t- butyl chloride preferably undergo hydrolysis by
What is the equation for the equilibrium constant (Kc) ({{K}_{c}}) for the following reaction? 12A(g)+13B(g)23C(g) \frac{1}{2}A(g)+\frac{1}{3}B(g)\frac{2}{3}C(g)
What is the electrode potential (in V V ) of the following electrode at 25oC {{25}^{o}}C ? Ni2+(0.1  M)∣Ni(s) N{{i}^{2+}}(0.1\,\,M)|Ni(s) (Standard reaction potential of Ni2+∣Ni N{{i}^{2+}}|Ni is −0.25  V,  2.303RTF=0.06) -0.25\,\,V,\,\,\frac{2.303RT}{F}=0.06)