54959.The pitch and the number of circular scale divisions in a screw gauge with least count 0.02 mm are respectively
1mm and 100
0.5 mm and 50
1 mm and 50
0.5 mm and 100
54960.If unit of length and force are increased 4 times. The unit of energy
Is increased by 4 times
Is increased by 16 times
Is increased by 8 times
Remains unchanged
54962.The density of a material in CGS system of unit is $4g/cm^3$. In a system of units in which unit of length is 10 cm and unit of mass is 100 g, the value of density of material will be
0.4
40
400
0.04
54964.Error in the measurement of radius of a sphere is 1 %. Then error in the measurement of volume is
1%
5%
3%
8%
54965.When two quantities are divided, the relative error in the result is given by
The product of the relative error in the individual quantities
The quotient of the relative error in the individual quantities
The difference of the relative error in the individual quantities
The sum of the relative error in the individual quantities
54966.If x=$at+bt^2$, where x is the distance travelled by the body in kilometers while t is the time in seconds, then the unit of & is
km/s
kms
$ km/s^2$
$kms^2$
54967.In a new system of units, the fundamental quantities mass, length and time are replaced by acceleration a , density ′ρ′ and frequency f. The dimensional formula for force in this system is
$[ρa^4f]$
$[ρa^4f^{−6}]$
$[ρ^{−1}a^{−4}f^6]$
$[ρ^{−1}a^{−4}
54968.An element having 4 electrons in its outermost orbit forms bond by
losing electrons
gaining electrons
sharing electrons
any of the above
54969.The percentage of ionic character of a bond is calculated by the difference in
size of atoms
ionization potential of atoms
electronegativity of atoms
atomic volumes of atoms
54970.Elements with electronegativities 1.2 and 3.0 form
electrovalent bond
covalent bond
coordinate bond
metallic bond
54971.Ionic compounds don’t conduct electricity in
solution
fused state
solid state
none of the above
54972.When an element of very low ionization potential reacts with an element of very high electron affinity
a covalent bond is formed
an electrovalent bond is formed
a metallic bond is formed
no bond is formed
54973.The bonds present in CuSO4.5H2O are
electrovalent and coordinate
covalent and coordinate
electrovalent and covalent
electrovalent, covalent and coordinate
54974.The paramagnetic nature of oxygen molecule is explained by
valence bond theory
heitler london theory
hund mulliken theory
none of the above
54975.The bond between two atoms of the same element is
polar covalent bond
ionic bond
non-polar covalent bond
none of the above
54977.Electrovalent compounds are
low melting
insoluble in polar solvents
conductors in fused state
none of the above