Entry Test (NMDCAT & ECAT) Preparation for FSc students to get admission to Medical colleges and Engineering Universities

1) Consider the following reaction involved in the manufacturing of urea.
CO₂ + 2NH₃ → NH₂COONH₄
If 22g of carbon dioxide reacts with 34g of ammonia to form the ammonium carbamate, the reaction is taken as irreversible and goes to completion. Identify the limiting reagent and amount of ammonium carbamate formed.

2) An atom of carbon is twelve times heavier than______atom

3) For which of the following compounds, term empirical formula can not be applied

4) The molar volume of SO₂ at RTP is

5) From the following equation, which relationship can be studied
2H₂ +O₂ ---> 2H₂O

6) 0.5 moles of H₂O is formed when 1 g H₂ reacts with _______ g of O₂

7) For stoichiometric calculations, we have to assume

8) The law of conservation of mass and law of definite proportions are obeyed while doing

9) Hydrogen and oxygen have the same at STP

10) The sample of (NH4)3PO4 contains 6 moles of hydrogen atoms. The number of moles oxygen atoms in samples is

11) The mass of carbon in acetone is equal to the mass of carbon in

12) The value of 'n' in determining molecular formula is obtained from the relation

13) Number of electrons in 1.7g of OH^- are

14) Stoichiometric calculations are made when

15) Combustion analysis is used to determine

16) According to equation
4NH₃ + 50₂---> 4NO+6H₂O
When 1mole of NH₃ and 1 mol of O₂ react then

17) The total number of electrons present in 44.82 dm³ of Ne gas are

18) 6g C reacts with 22414 cm³ of O₂ to produce CO2. How much non-limiting reactant is in excess

19) In combustion analysis, %age of which element in always determined by difference method

20) Mass of 1.505×10²³ molecules of NH₃ is

21) Empirical formula of a hydrocarbon having 80% C and 20% of hydrogen is

22) Which of the following has the maximum number of molecules

23) How many moles of neutrons are present in one mole of heavy water?

24) CN^-1 is iso-electronic with

25) Fractional atomic masses can be calculated from