BIOLOGY SET 3 MODEL PAPER SOLUTION AAKANKSHA 40

राजस्थान बोर्ड मॉडल पेपर 2022 भौतिक विज्ञान(RBSE PHYSICS MODEL PAPER)

20 cm^(3) of xM solution of HCl is exactly neutralised by 40cm^(3) of 0.05 M NaOH solutions, the pH of HCl solution is

If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh (2) 1/2 kilograms ?

Plot the following points on the graph paper : P(3,0) (ii) Q(-4,0) R(0,5) (iv) S(0,-7) (fig)

Plot the following points on the graph paper : P(3,0) (ii) Q(-4,0) R(0,5) (iv) S(0,-7) (fig)

In a hostel 60% of the students read Hindi news paper, 40% read English news paper and 20% read both Hindi and English news papers. A student is selected at random. (a) Find the probability that she reads neither Hindi nor English news papers. (b) If she reads Hindi news paper, find the probability that she reads English news paper. (c) If she reads English news paper, find the probability that she reads Hindi news paper.

The arithmetic mean of a set of 50 numbers is 38. If two numbers of the set, namely 60 and 40 discarded, the arithmetic mean of the remaining set of numbers is

Model test paper

A model of an aeroplane is made to a scale of 1 : 400. Calculate : the length, in cm, of the model, if the length of the aeroplane is 40 m.