1. Plasma is the mixture of:A. Electrons and protons only.B. Electrons and positive ions.C. Electrons and beta two particles.D. Neutrons and protons.2. The electrode potential of metals are:Mg2+ + 2e- Mg E° = - 2.71 vAg Ag+ + 1e- E° = - 0.8 vCell potential (emf) of the cell formed by these two will be:A. + 3.51 v B. -3.51 vC. + 1.91 v D. – 1.91 v

Plasma is the mixture of:A. Electrons and protons only.B. Electrons and positive ions.C. Electrons and beta two particles.D. Neutrons and protons.2. The electrode potential of metals are:Mg2+ + 2e- Mg E° = - 2.71 vAg Ag+ + 1e- E° = - 0.8 vCell potential (emf) of the cell formed by these two will be:A. + 3.51 v B. -3.51 vC. + 1.91 v D. – 1.91 v3. At constant Pressure what will be the change in temperature when the volume ofa gas will become twice of what it is at 0oC?A. 546oC B. 200oCC. 546 K D. 273 K4. Rate equation for a reaction 2A product is Rate = K [A]2. Unit of specificrate constant for this reaction is:A. mol2dm-6 S-1 B. mol-1dm3 S-1C. moldm-3 D. S-15. A substance which itself is not a catalyst but increases the activity of a catalyst iscalled:A. Enzyme B. inhibitorC. Promoter D. PoisonerPage 1 of 26. Diamond is a bad conductor of electricity because:A. It has a tight structure B. It has a high densityC. It has no free electrons D. It is transparent to light7. Mixture containing 0.01 mole/300cm3 of NH4Cl and 0.1 mole/400cm3 of NH4OHhaving pKb = 5 has pH of:A. 4.00 B. 4.12C. 9.88 D. 10.008. 5g of urea (M.wt = 60) is dissolved in 250 cm3 of its solution. Concentration ofsolution will be:A. 5 % w/w B. 5 % v/wC. 0.34 M D. 0.34m9. The gaseous element X exists in diatomic form. One volume of the element Xcombines with two volume of hydrogen to form two volume of gaseous hydride.What is the formula of hydride of X.?A. HX2 B. HX3C. H2X D. HX10. The number of bonds in one molecule of Nitrogen is:A. one σand one  B. one σand two C. three σonly D. two σand one 11. Splitting of spectral lines by placing the excited atom in electric field is called:A. Zeeman effect B. Stark effectC. Photoelectric effect D. Compton effect12. In the ground state of an atom, the electron is present:A. in the valence shell B. in the second shellC. nearest to the nucleus D. farthest from the nucleus13. Which one of the following exists in the solid state as a giant covalent lattice?A. ice B. iodineC. silicon (IV) oxide D. dry ice14. pH of 1 × 10-4 M solution of Phosphoric acid is:A. 1.10 B. 2.02C. 3.52 D. 4.1315. In which substance does nitrogen exhibit the highest oxidation state?A. NO B. N2OC. N2O4 D. NaNO216. The heat of neutralization of the given reaction is -57.3 kJNaOH + HCl NaCl + H2OWhat is the heat of neutralization of the following reaction?Fe(OH)2 + 2HCl FeCl2 + 2H2OA. -57.3kJ B. -114.6kJC. -228kJ D. -28.6kJ17. Which of these samples of gas contains the same number of atoms as 1g ofhydrogen molecule? (At. Mass C = 12, O = 16, H = 1, Ne = 20)A. 22 g of CO2 B. 8 g of CH4C. 20 g of Ne D. 8 g of O3

Plasma is the mixture of:A. Electrons and protons only.B. Electrons and positive ions.C. Electrons and beta two particles.D. Neutrons and protons

Plasma is the mixture of

What is the cell potential of an electrochemical cell that has the half-reactions shown below?Fe3+ + e- Fe2+Cu Cu2+ + 2e-Click for a reduction potential chartA.- 0.43 VB.1.2 VC.1.1 VD.0.43 V

The standard electrode potentials for the reactionsAg+ (a) + e– ⎯⎯→ Ag(s) Sn2+ (a) + 2e– ⎯⎯→ Sn (s)at 25 °C are 0.80 volt and –0.14 volt, respectively. The standard emf of the cell formed by thesehalf-cells is