If Young’s double slit experiment is done with white light, which of the following statements will be true? 

(A) All the bright fringes will be coloured. 

(B) All the bright fringes will be white. 

(C) The central fringe will be white. 

(D) No stable interference pattern will be white.

Silver chloride dissolves in excess of ammonium hydroxide solution. The cation present in the resulting solution is 

(A) [Ag(NH₃)₆]⁺ 

(B) [Ag(NH₃)₄]⁺ 

(C) Ag⁺ 

(D) [Ag(NH₃)₂]⁺

The main reason that SiCl₄ is easily hydrolysed as compared to CCl₄ is that 

(A) Si-Cl bond is weaker than C-Cl bond. 

(B) SiCl₄ can form hydrogen bonds. 

(C) SiCl₄ is covalent. 

(D) Si can extend its coordination number beyond four.

Out of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one?

(A) (n –1)d⁸ns² 

(B) (n –1)d⁵ns² 

(C) (n –1)d³ns² 

(D) (n –1)d⁵ns¹

Without changing the direction of the axes, the origin is transferred to the point (2, 3). Then the equation x² + y² – 4x – 6y + 9 = 0 changes to 

(A) x² + y² + 4 = 0 

(B) x² + y² = 4 

(C) x² + y² – 8x – 12y + 48 = 0 

(D) x² + y² = 9

A compound formed by elements X and Y crystallizes in the cubic structure, where X atoms are at the corners of a cube and Y atoms are at the centres of the body. The formula of the compound is : 

(A) XY 

(B) XY₂ 

(C) X₂Y₃ 

(D) XY₃