Basic Science T...

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:

Which famous scientist unknowingly founded the field of spectroscopy?

Which one of the following pairs is correctly matched?

Scientists prepared the ____ of solution for their next experiment.

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 :

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?

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

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

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 $$6000\ kg $$ 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 ?