Basic Science Test 10

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Basic Science Test 10

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Weekly Quiz Competition

Question 1
1 / -0

Select the correct alternative about Habermas' reconstruction of Marxism: i. Purposive rational action instead of superstructure ii. Symbolic interaction instead of superstructure iii. Societal modes of self-reflection instead of class consciousness iv. Class competition instead of class conflict Select the correct alternative:

A
i, ii, iii

B
i, ii, iv

C
ii, iii, iv

D
i, ii, iii, iv
Question 2
1 / -0

Which famous scientist unknowingly founded the field of spectroscopy?

A
Issac Newton

B
Galileo

C
Graham Bell

D
None of the above

Solution

A Issac Newton while watching the stars through his telescope noticed visible spectrum at ends of lens.
Question 3
1 / -0

Which one of the following pairs is correctly matched?

A
Biosphere — Eduard Suess

B
Ecosystem — A.P. de Candolle

C
Ecology — A.G. Tansley

D
Biodiversity — Reiter

Solution

Eduard Suess was an Austrian, responsible for hypothesising two major former geographical features, the supercontinent Gondwana and the Tethys Ocean.The term "biosphere" was coined by geologist Eduard Suess in 1875, which he defined as "The place on Earth's surface where life dwells."
Question 4
1 / -0

Scientists prepared the ____ of solution for their next experiment.

A
vial

B
vile

C
viol

D
NA

Solution

Scientists prepared the vial of solution for their next experiment.
VIAL :-Vial is a small container, typically cylindrical and made of glass, used especially for holding liquid medicines. A vial can be used as scientific sample vessel.
VILE :-Vile is used as an adjective which means unpleasant, immoral and unacceptable.
VIOL :-Viol is anyone of a family of bowed, fretted and stringed instruments with hollow wooden bodies.
So, the correct answer is 'VIAL'.
Question 5
1 / -0

Walking along a large city park on a hot summer day, you look for a cool resting place and sit down on a large rock under a tree, at the quiet edge of a stream. You have searched for and found an example of a :

A
microclimate

B
biome

C
landscape

D
population

Solution

Microclimate is defined as the climate of a very small or restricted area, especially when this differs from the climate of the surrounding area. Here, while the climate of the surrounding area is very hot the place at the edge of the stream, under the tree, on a rock will have a cooler microcleinate.
Question 6
1 / -0

Consider following statement about the estuary
(I) Estuary is a place where the river fresh water meets with ocean water
(II) This area is highly productive
(III) This area is highly unproductive
(IV) All of the above
Which of above the statements is/are true?

A
(I) only

B
(II) only

C
(I) and II)

D
(III)

Solution

Estuary is a place where the fresh water of river or stream meets with ocean water. This place provides the conducive conditions for development of different species.
Question 7
1 / -0

Match List-I with List-II and select the correct answer from the codes given below:
List-I List-II
A. Biodiversity 1. G. Tansley
B. Wildlife 2. E.O. Wilson
C. Ecosystem. 3. E. Haeckel
D. Ecology 4. W.T. Hornaday

A
A2, B4, C3, D1

B
A2, B4, C1, D3

C
A4, B2, C3, D1

D
A4, B2, C1, D3

Solution

The concept of biodiversity was propounded by E.O. Wilson. The concept of wildlife was propounded by W. Hornaday. The concept of Ecosystem propounded by G. Tansley. The concept of Ecology was propounded by E. Haeckel.
Question 8
1 / -0

The freezing point on a thermometer is market as $$-20^{\circ} $$ and the boiling point as $$130^{\circ} $$. A temperature of human body $$ (34^{\circ}C $$ on this therometerwill be read as

A
$$ 31^{\circ} $$

B
$$ 51^{\circ} $$

C
$$ 20^{\circ} $$

D
None of these

Solution
Question 9
1 / -0

Two trains are moving on the same track. The velocities of first train is $$72\ km/h $$ and the second is $$36\ km / h $$. If the first train behind the second train, then the minimum distance between the trains such that they will not collide (retardation of brakes of first trains is $$0.005\ m/s^{2}$$)

A
$$1000\ m $$

B
$$500\ m $$

C
$$100\ m $$

D
$$3000\ m $$

Solution

Velocity of $$1st$$ train $$V_{1} = 72\ km/h $$
Velocity of the $$2nd$$ train $$V_{2} = 36\ km/h $$

Retardation $$ = 0.005\ m/s^{2} $$
Let safe distance be S
Relative Velocity $$ = 72 - 36 = 36\ km/h $$
$$ = 36 \times \dfrac{1000}{3600} = 10\ m/s $$

SO, it $$1st$$ train retards from initial position then for not collecting

time $$ = \dfrac{{\text{Rel. velocity}}}{{\text{Rel. acce}}}$$

$$ = \dfrac{10}{0.1} = 100 $$

Safe distance $$ = V \times t = 100 \times 10 = 1000 $$
Question 10
1 / -0

A $$6000\ kg $$ rocket is set for firing. If the exhaust speed is $$ 1000\ m/s $$, how much gas must be ejected each second to supply the thrust needed to overcome the weight of the rocket ?

A
$$30\ kg $$

B
$$40\ kg $$

C
$$50\ kg $$

D
$$60\ kg $$

Solution

$$f = \dfrac{dp}{dt} $$

$$dp $$ = (rate of ejection) $$ \times dt \times v $$
$$f $$ = rate of ejection $$ \times v $$
$$ mg $$ = (rate of ejection) $$ \times v $$
rate of ejection $$ = \dfrac{6000 \times 10}{1000} $$

$$ = 60\ kg/sec $$

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Re-Attempt Weekly Quiz Competition

Basic Science Test 10

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Basic Science Test 10

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SHARING IS CARING

Question 1

i, ii, iii

i, ii, iv

ii, iii, iv

i, ii, iii, iv

Question 2

Issac Newton

Galileo

Graham Bell

None of the above

Solution

Question 3

Biosphere — Eduard Suess

Ecosystem — A.P. de Candolle

Ecology — A.G. Tansley

Biodiversity — Reiter

Solution

Question 4

vial

vile

viol

NA

Solution

Question 5

microclimate

biome

landscape

population

Solution

Question 6

(I) only

(II) only

(I) and II)

(III)

Solution

Question 7

A2, B4, C3, D1

A2, B4, C1, D3

A4, B2, C3, D1

A4, B2, C1, D3

Solution

Question 8

$$ 31^{\circ} $$

$$ 51^{\circ} $$

$$ 20^{\circ} $$

None of these

Solution

Question 9

$$1000\ m $$

$$500\ m $$

$$100\ m $$

$$3000\ m $$

Solution

Question 10

$$30\ kg $$

$$40\ kg $$

$$50\ kg $$

$$60\ kg $$

Solution

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