MCQ
If a calculated value $2.7465 \,g$ contains only three significant figures, the two insignificant digits in it are ............ 
  • A
    $2$ and $7$
  • B
    $7$ and $4$
  • $6$ and $5$
  • D
    $4$ and $6$

Answer

Correct option: C.
$6$ and $5$
c
(c)

$2.7465 \,g \Rightarrow$ Last two digits are most insignificant

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

When $x$ amount of heat is given to a gas at constant pressure, it performs $x/3$ amount of work. The average number of degrees of freedom per molecule is
$5$ litre of benzene weighs
A plano-convex thin lens is used to obtain the image of a point object $O$ on the screen $S$ as shown in figure. The thickness of the lens in the middle is $0.5\ cm$ and refractive index of the material of the lens is $1.5$ . If the separation $D$ between the object and the screen is to be minimum, then the aperture diameter of the lens should be.....$cm$ (consider lens as thin)
The true value of angle of dip at a place is $60^o$, the apparent dip in a plane inclined at an angle of $30^o$ with magnetic meridian is
A charged particle of mass $m = 2\ kg$ and charge $1μC$ is projected from a horizontal ground at an angle $\theta  = 45^o$ with speed $10\ ms^{-1}$ . In space, a horizontal electric field towards the direction of projection $E = 2 \times 10^7\ NC^{-1}$ exists. The range of the projectile is......$m$
Consider the following reaction

(image) $\xrightarrow[{Pd - BaS{O_4}}]{{{H_2}}}\,A$

The product $A$ is

A planet has twice the radius but the mean density is $\frac{1}{4}^{th}$ as compared to earth. What is the ratio of escape velocity from earth to that from the planet
For a closed surface $\oint {\overrightarrow {E \cdot } } \,\overrightarrow {ds} \,\, = \,\,0$, then 
Half lives of two radioactive nuclei $A$ and $B$ are $10\, minutes$ and $20\, minutes$, respectively. If, initially a sample has equal number of nuclei, then after $60$ $minutes$ , the ratio of decayed numbers of nuclei $A$ and $B$ will be
A solid disc of mass $M$ is just held in air horizontally by throwing $40$ stones per sec vertically upwards to strike the disc each with a velocity $6\,m{s^{ - 1}}$. If the mass of each stone is $0.05\,kg$ what is the mass of the disc  ........... $kg$     $(g = 10\,m{s^{ - 2}}$)