CHEMISTRY PROJECT

1. Which element shows variable valency ? A. Ca B. Ne C. F D. Fe	A. Ca B. Ne C. F D. Fe D
2. How many electrons are released by Fe in FeCI₂ ? A.3 B. 2 C.1 D. 4	A.3 B. 2 C.1 D. 4 B
3. How many electrons are present in the subshell of the outermost shell in the elements of group 1 ? A.1 B 2. C. 3. D. 4	A.1 B 2. C. 3. D. 4 A
4. The principal energy levels are represented by the letters A. a,b,c,d / B. p,q,r,s / C. K,L,M,N / D. s,p,d,f	A. a,b,c,d / B. p,q,r,s / C. K,L,M,N / D. s,p,d,f C
5. The maximum number of electrons present in a 'p' subshell is... A.2 B. 6 C. 10 D. 14	A.2 B. 6 C. 10 D. 14 B
6. Which is not possible ? A.2d B. 2s C. 2p D. 3d	A.2d B. 2s C. 2p D. 3d A
7. The element with atomic number 100 is.. A. Fermium B. Rutherfordium C. Bohrium D. Mendelinium	A. Fermium B. Rutherfordium C. Bohrium D. Mendelinium A
8. The most reactive element in group 17 is... A.F B. Cl. C. Br D. I	A.F B. Cl. C. Br D. I A
9. The element that is used as fuels in nuclear reactors... A. Uranium B. Thorium C. Plutonium D. All the above	A. Uranium B. Thorium C. Plutonium D. All the above D
10. The block elements which shows variable oxidation states... A. s block B. d block C. d block and f block D. p block	A. s block B. d block C. d block and f block D. p block C