The meaning of education through excursion is
education outside school premises
recreation outside school premises
practical personal experience
learning in difficult situation
Which of the following teaching method was invented by Kilpatrick?
Problem solving method
Project method
Heuristic method
Demonstration method
Bronze is an alloy of
copper and zinc
copper and tin
copper and iron
copper and aluminium
B.
copper and tin
Bronze, alloy traditionally composed of copper and tin. Bronze is of exceptional historical interest and still finds wide applications. It was made before 3000 bc, though its use in artifacts did not become common until much later.
Which of the following is not objective of a science laboratory?
To arouse interest towards science amongst the students
To prove scientific principles
To use the spare time of students
To develop the measuring skills
Following is not a property of radiation
It travels with velocity of light
Medium is necessary for propagation
Its nature is electromagnetic
It has quantum nature
Which of the following characteristics of sound depend on the amplitude of vibrations?
Speed
Pitch
Loudness
Quality
Match List I with List II and choose the correct answer from the codes given below the lists
List I |
List II |
A. PAN | (i) Chloroethene |
B. Natural rubber | (ii) Caprolactum |
C. Nylon-6 | (iii) Isoprena |
D. PVC | (iv) Acrilonitrile |
A B C D(iv) (iii) (ii) (i)
A B C D(i) (ii) (iii) (iv)
A B C D(iii) (iv) (i) (ii)
A B C D(ii) (i) (iii) (iv) .
In the reaction
2H2O H3O+ + OH- , water is
a weak base
a weak acid
Both a weak acid and a weak base
Neither an acid nor a base