SAT (Stage-2) Mock Test

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SAT (Stage-2) Mock Test - 56

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Weekly Quiz Competition

Question 1
1 / -0

In three kingdom classification, organisms like yeasts and rhizopus are included in which of the following kingdoms?

A
Fungi

B
Protista

C
Animalia

D
Plantae

Solution

In three kingdom classification, organisms like yeasts and rhizopus are included in kingdom Plantae.
Question 2
1 / -0

Identical twins arise when

A
sperm divides into two halves

B
two sperms fuses with one ovum

C
egg divides into two halves

D
one sperm fuses with two ova

Solution

Identical twins arise when egg divides into two halves which then divides into two separate embryos.
Question 3
1 / -0

Which of the following is used for dating the bones?

A
P³²

B
I¹²¹

C
C¹⁴

D
H³

Solution

Isotope of carbon, i.e. C¹⁴is used for dating the bones. Carbon 14 is an isotope of carbon which is formed naturally in the atmosphere.
Question 4
1 / -0

The chief nitrogenous waste in urine of man or terrestrial mammals is

A
urea

B
uric acid

C
ammonia

D
None of these

Solution

The chief nitrogenous waste in urine of man or terrestrial mammals is urea.
Question 5
1 / -0

A person deficient in rhodopsin (visual pigment) should take

A
tomatoes

B
radishes

C
carrots

D
guavas

Solution

A person deficient in rhodopsin (visual pigment) should take carrots. It is a biological pigment in photoreceptor cells of the retina.
Question 6
1 / -0

Gestation period is the time between

A
birth and puberty

B
birth and fertilisation

C
the foetus forming and being born

D
fertilisation and birth

Solution

Gestation period is the time between fertilisation and birth of the young ones. For most species, the amount a fetus grows before birth determines the length of the gestation period.
Question 7
1 / -0

Which of the following is not a disease caused by intrinsic factors?

A
Sickle cell anaemia

B
Pellagra

C
Haemophilia

D
Dwarfism

Solution

Pellagra is not a disease caused by intrinsic factors. It is caused by extrinsic factors. It is a vitamin deficiency disease most frequently caused by chronic lack of niacin.
Question 8
1 / -0

Which type of microbe is the causative organism of fowlpox?

A
Parasite

B
Fungus

C
Virus

D
Bacterium

Solution

Fowlpox is the worldwide disease of poultry caused by viruses of the family Poxviridae and the genus Avipoxvirus. The viruses causing fowlpox are distinct from one another but antigenically similar possible hosts including chickens, turkeys, quail, canaries, pigeons, and many other species of birds.

Question 9

1 / -0

Match the following:

(i) Sewage poured in river	(A) Soil pollution
(ii) Coal burning plant	(B) Water pollution
(iii) Insecticide sprayed on crops	(C) Thermal pollution
(iv) Waste water from boiler	(D) Air pollution

(i) - (B), (ii) - (C), (iii) - (D), (iv) - (A)

(i) - (C), (ii) - (A), (iii) - (D), (iv) - (B)

(i) - (B), (ii) - (D), (iii) - (A), (iv) - (C)

(i) - (C), (ii) - (D), (iii) - (A), (iv) - (B)

Solution

Sewage poured into rivers causes water pollution.
Coal burning plant releases harmful gases in air and causes air pollution.
Insecticides sprayed on crops lead to soil pollution.
Waste water from boiler, when discharged into water bodies, increases their temperature, leading to thermal pollution.

Question 10
1 / -0

Pick out two human activities from among the following, which affect the habitat adversely.

A
Floods and deforestation

B
Afforestation and fire

C
Urbanisation and noise pollution

D
Slums and pollution

Solution

Floods and deforestation are two human activities which affect the habitat adversely.

The primary effects of flooding include loss of life and damage to buildings and other structures, including bridges, sewerage systems, roadways, and canals. Floods also frequently damage power transmission and sometimes power generation, which then has knock-on effects caused by the loss of power.

Deforestation, clearance, clearcutting or clearing is the removal of a forest or stand of trees from land which is then converted to a non-forest use.
Question 11
1 / -0

The decimal expansion of the rational number 14587/1250 will terminate after

A
one decimal place

B
two decimal places

C
three decimal places

D
four decimal places

Solution

Power of denominator is 4, i.e. 4 decimal places.
Question 12
1 / -0

The value of 1.999... in the form of p/q, where p and q are integers and q ≠ 0, is

A
19/10

B
1999/1000

C
2

D
1/9

Solution
Question 13
1 / -0

If X < Y, then (X + y - x/3) is a rational number

A
between X and Y

B
less than X and Y both

C
greater than X and Y both

D
less than X, but greater than Y

Solution
Question 14
1 / -0

Find the value of the following expression:

A

B

C

D

Solution
Question 15
1 / -0

If A, a and b are three positive rational numbers such that a < A < b, then which of the following can always be the value of A?

A
a + b/2

B
b/2

C
a/2

D
b - a/2

Solution

Between two rational numbers there always lies a rational number that is midway between them, or we can say that it is the midpoint of those two numbers.
Since A lies between a and b, A could be the midpoint.
Therefore, midpoint of a and b = a + b/2 = A
Example: Let a = 5 and b = 9