POLYCET (2022) – 11

The number of prime factors present in the prime factorization of 5005 are
a. 5
b. 3
c. 4
d. 2

The highest power of the prime number in the prime factorization of 163800 is
a. 5
b. 1
c. 2
d. 3

Logarithm of unity to any base is
a. 0
b. 1
c. 10
d. undefined

The prime numbers exist in the prime factorization of 1584 are
a. 2, 3 and 7
b. 2, 3 and 11
c. 5, 7 and 11
d. 2, 3, 7 and 11

The sum of the exponents of all primes, in the factorization of 156 is
a. 3
b. 6
c. 4
d. 5

The largest positive integer that will divide 398, 436 and 542 leaving remainders 7,11 and 15 respectively is
a. 17
b. 19
c. 13
d. 15

The HCF of 18, 24, 60, 150 is
a. 3
b. 6
c. 4
d. 5

The number of rational numbers exist between any two rational numbers are
a. 1
b. 2
c. Infinite
d. 0

The LCM and HCF of two numbers are 22338 and 9 respectively. One of the two numbers is 306. The other number is
a. 657
b. 457
c. 384
d. 726

The combined set of rational and irrational numbers is denoted by
a. R
b. Q
c. Q’
d. C

Half leaf experiment is used to demonstrate the requirement of this for photosynthesis
a. Carbon dioxide
b. Oxygen
c. Sunlight
d. Water

Photosynthesis occurs maximum in
a. Blue and red light
b. Green and red light
c. Blue and green light
d. Only in green light

In photosynthesis , what colours of light is absorbed more
a. Violet and green
b. Red and green
c. Blue and red
d. Blue and green

Which part of the Dodder plant cuscuta forms haustoria ?
a. Root
b. Stem
c. Leaf
d. All the above

Salivary amylase acts in this medium
a. Alkaline
b. Acidic
c. Neutral
d. All the above

This vitamin is abundantly available in carrot, tomato, pumpkin, papaya
a. Vitamin-C
b. Vitamin-D
c. Vitamin-A
d. Vitamin-E

Variegated leaf experiment helps to demonstrate the essentiality of this for photosynthesis
a. Light
b. Chlorophyll
c. Oxygen
d. Carbon dioxide

Fats are emulsified by
a. Bile juice
b. Pancreatic juice
c. Intestinal juice
d. All the above

The chemical name of vitamin ‘E’ is
a. Retinol
b. Calciferol
c. Tocoferol
d. Phylloquinone

Proteins in the food are digested by
a. Pepsin
b. Trypsin
c. Lipase
d. Pepsin, Trypsin

If 200 cal. heat energy is required 40 grams of liquid to its gaseous state then the latent heat of vaporization is
a. 4 cal/g
b. 5 cal/g
c. 8000 cal/g
d. 240 cal/g

For same change in temperature the amount of heat(Q) absorbed by a substance is _____ to its mass.
a. Equal
b. Directly
c. Inversely proportional
d. Not proportional

If we keep a metal piece and a wooden piece in the refrigerator which one get colder ?
a. Metal piece
b. Wooden piece
c. Both get colder
d. None

The water droplets condensed on surface is known as
a. Humidity
b. Dew
c. Moisture
d. All

What is the S.I. unit of heat ?
a. Joule
b. Calorie
c. Kelvin
d. Celsius

Rate of evaporation of liquid depends upon
a. Surface area
b. Temperature
c. Water vapour in surrounding air
d. All

Specific heat of lead in J/Kg-K is
a. 128
b. 130
c. 391
d. 882

Glass specific heat is
a. 504 J/kg
b. 10.12 J/kg
c. 0.13 J/kg
d. 0.22 J/kg

Temperature measured on which scale is called absolute temperature.
a. Celsius scale
b. Kelvin scale
c. Fahrenheit scale
d. All

What is the reason for hotness of samosa inside and coldness outside
a. Low specific heat
b. High specific heat
c. Outside layer has high specific heat
d. We can’t tell