NTA JEE Main 6th April 2023 Shift 1

For a concentrated solution of a weak electrolyte ($$K_{eq}$$ = equilibrium constant) A$$_2$$B$$_3$$ of concentration 'C', the degree of dissociation '$$\alpha$$' is

Which of the following options are correct for the reaction?
$$2Au(CN)_2 ^-(aq) + Zn(s) \rightarrow 2Au(s) + Zn(CN)_4 ^{2-}(aq)$$
A. Redox reaction
B. Displacement reaction
C. Decomposition reaction
D. Combination reaction

Strong reducing and oxidizing agents among the following, respectively, are

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Loss of electron from hydrogen atom results in nucleus of ~$$1.5 \times 10^{-3}$$ pm size.
Reason R: Proton H$$^+$$ always exists in combined form.
In the light of the above statements, choose the most appropriate answer from the options given below:

The setting time of Cement is increased by adding

Match List-I with List-II.
List-I (Element detected)   List-II (Reagent used/Product formed)
A. Nitrogen                         I.      Na$$_2$$FeCN$$_5$$NO
B. Sulphur                           II.     AgNO$$_3$$
C. Phosphorus                   III.    Fe$$_4$$FeCN$$_{6_{3}}$$
D. Halogen                          IV.   NH$$_{4_{2}}$$MoO$$_4$$

The possibility of photochemical smog formation is more at

A compound is formed by two elements X and Y. The element Y forms cubic close packed arrangement and those of element X occupy one third of the tetrahedral voids. What is the formula of the compound?

The standard electrode potential of M$$^+$$/M in aqueous solution does not depend on

Match List I with List II
LIST I - Enzymatic reaction                           LIST II - Enzyme
A. Sucrose $$\rightarrow$$ Glucose and Fructose            I. Zymase
B. Glucose $$\rightarrow$$ ethyl alcohol and CO$$_2$$             II. Pepsin
C. Starch $$\rightarrow$$ Maltose                                        III. Invertase
D. Proteins $$\rightarrow$$ Amino acids                             IV. Diastase