ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Which of the following is lighter Li k Na Ca
2 The alkaline earth elements have in their s-orbital One electron Two electron No electron Three electron
3 Which of the element is not an alkaline earth metal Beryllium Strontium Barium Caesium
4 Which of the element is not alkali metal Lithium Rubidium Francium Magnesium
5 From left to right, atomic radii of transition elements Increases Decreases Remain same None of the above
6 The coinage metals are Ni, Pd, Pt Cu, Ag, Au Zn, Al, Pb Fe, Si, Sn
7 Which is the most volatile compound Hl HCl HBr HF
8 Mark the correct statement Na<sup>+ </sup>is smaller than Na atom Na<sup>+</sup>is larger than Na atom Cl<sup>-</sup>is the smaller than Cl atom Cl<sup>-</sup>(ion) and Cl (atom) are equal in size
9 Keeping in view the size of atoms, which order is the correct one Mg &gt; Sr Ba &gt; Mg Lu &gt; Ce Cl &gt; l
10 The valency, ionization energy and electrongativity of elements are related to its Atomic number Properties Atomic weight Family group
11 Which of the following has highest oxidation potential Be Li Na Ca
12 The valence shell of hydrogen is half filled like those of IV - A VIA V - A VIIA
13 Which of the following statement about electron affinity of two elements is correct Carbon has greater than oxygen Sulphur has less than oxygen Iodine has greater than bromine Bromine has less than chlorine
14 The structure of complex hydrides is Tetrahedal Trigonal Octahedral Square planar
15 For the representative elements from left to right across a period in the periodic table, the electron effinity of the atom generally Increases Remains constant Decreases Not clear
16 The elements of f-block are also known as Inner-transition Outer transition Normal elements Alkaline earth metals
17 Elements in the same family have Same atomic number Molecular wt same Same chemical properties Same electronic configuration
18 According to the periodic law, the chemical properties of the elements are periodic functions of their Density Atomic number Atomic mass Mass number
19 Which is not interstitial hydride LaH VH TaH None
20 In a group form top to bottom, the hardness of alkali metals Remains unchanged Increases Decreases None
21 Which has highest 1st I.E. Br Cl F l
22 Each vertical column of the periodic table includes elements with chemical characteristics that are in general Identical Similar Different Similar as well as different
23 Which element should have the greatest value for electronegativity when combined with hydrogen Na Si S Cl
24 Which of the following elements have the largest radius F Cl Br l
25 Which of the following elements should be the least metallic in character Rb ln Te l
26 Gradation in properties in the periods of periodic tables are due to change in Atomic weight The number of electrons Number of protons Electronic configuration
27 The most distinctive character among the elements is their division into Metals and non-metals Solids, liquids and gases Atoms and molecules Active and inactive elements
28 Which of the following discoveries resulted in a version of the Mendeleefs
periodic law
 The nucleus of atom by Rutherford The elements polonium and radium by the Curies Atomic numbers by Moseley x-rays by Roentgen
29 The hydration energy is the heat evolved when one mole of gaseous ion is dissolved in water. The hydration energy of an ion Increases with increase of charge to mass ratio Decreases with increase of charge to mass ratio Depends on sign of charge +ve or -ve Depends upon the solvent
30 Although hydrogen resemble with the elements of group lA, IVA and Vll but it is usually placed in Group IA Group IV A Group VII Group VIII
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