WorksheetsNTSE 14 Physics Chemistry and Biology
Total questions: 30
Worksheet time: 15mins
When a body is moving with a uniform velocity, then
It covers equal distance in equal intervals of time
Its uniform velocity is equal to the average velocity
It covers equal displacements in unequal intervals of time
The path of the body is not a straight line
The mass in motion will have
the potential energy of a body
the kinetic energy of a body
the momentum of a body
both b and c
The minimum distance between the real image and the real object of a concave mirror is
zero
2f
f
4f
The near point of a hypermetropic person is 0.5m. What kind of lens is suitable to correct his vision defect?
a convex lens of focal length 25cm
a concave lens of focal length 0.5m
a concave lens of focal length 50m
a convex lens of focal length 50cm
Three resistors
R1,R2, and R3 are connected in series combination, which of the following is not a correctcurrent passes through all resistors are same
R∞=R1+R2+R3
Voltage across all the resistors are same
total voltage of a circuit is equal to sum of the voltages across each resistor in circuit
The materials required to find the refractive index of a given prism is
v-stand, prism, pins, scale
prism, screen, scale
pins, protractor, prism, scale
protractor, candle, v-stand
A person saw his face inside a mirror he observed his image is smaller in size. What kind of mirror it is
diverging
converging
plane
none of these
A current-carrying wire is kept in a uniform magnetic field, it deflects, this principle is used in
electric motors
generators
security alarm
both b & c
Image distance (-37.5cm) and object distance (-25cm) the magnification of a mirror's
1510
-1.5
3
1.5
A lens bounded by two spherical surfaces curved inwards is called
plano-convex lens
biconvex lens
Plano concave lens
biconcave lens
A sample of Ascorbic acid (vitamin C) is synthesized in the laboratory; it contains 1.50 g of Carbon and 2.00 g of Oxygen. Another sample of Ascorbic acid isolated from citrus fruits contains 6.35 g of Carbon. How many grams of oxygen does it contain?
Which law do you assume in answering this question?
7.25 : Law of conservation of mass
6.35 : Law of definite proportions
8.47 : Law of definite proportions
6.35 : Law of multiple proportions
Which of the following is a Reduction reaction?
Bleaching of colored objects using moist Chlorine
Rancidity of fats
Thermite process involving the reaction of Chromium oxide (or) Iron oxide with aluminum
The poling process involving the removal of impurities from molten metal.
The value of 'X' in
K2Al2(SO4)x.24H2O is1
2
3
4
In which of the following electrovalent compound both cation and anion represent the same inert gas configuration?
Calcium bromide.
Magnesium chloride
Strontium oxide
Potassium sulfide
Which of the following acid molecule differ from other molecules regarding their total number of valence electrons?
HCIO4
H3PO4
HNO3
H2SO4
Periodicity in the properties of elements in the modern periodic table is due to :
A regular increase in the atomic weight of elements.
Periodicity in the electronic configuration of atoms of elements.
Successive increase in the atomic number of elements.
Existence of families of elements.
How many orbitals can have the following set of quantum numbers: n = 3, l = 2, M =–2
1
8
2
4
The nature of a solution depends on its
[H3O+], but pH notation is used to express the nature of solution because[H3O+] value is very high in order to express it as simple number
[H3O+] and [oH+] values are same to over come confusion
[H3O+] value is extremely small, in order to express the nature of solution as a simple whole number
none of these
Which of the following is not an allotrope of Carbon?
Diamond
Buckminsterfullerence
Micelle
Graphite
The outermost shell electronic configuration of Cu (Z=29) is
3d54s1
3d94s2
3d104s0
3d104s1
Daksha’s heartbeat is 72 per minute. Then her pulse rate will be
more than 72/min
less than 72/min
exactly 72/min
can’t predict
Which of the following alkaloid used as ‘insecticide’?
Nicotine
Pyrethroids
Both a & b
none of these
Who is a surgeon in Washington, USA? He has done the first kidney transplantation at the Christian Medical College, Vellore, Tamilnadu?
Walther Fleming
Potu Narasimha Rao
Charles Hufnagel
August Weisman
Which of the following hormone has a direct impact on urination?
Adrenalin
Vasopressin
both a & b
none of these
The exchange of gases in mammals takes place in
Trachea
Bronchioles
Bronchi
Alveoli
Mitochondria and chloroplast are called semi-autonomous organelles because they have
true nucleus
their own DNA
Ribosomes
ER
The Dutch physician who constructed the dialysis machine in the year 1947
Charles Hufnagel
William Kolff
William Harvey
Thomas Graham
Which system is important in guiding the function of epiglottis and passage of food and air?
Respiratory system
Nervous system
Digestive system
all the above
The metabolic waster of hemoglobin of dead RBC’s are
bilirubin
biliverdin
urochrome
all the above
Which of the following animal is the worst smelling animal in the animal kingdom?
Tasmanian Devil
Bombardier Beetle
both a and b
none of these
