Q1. Which instrument is used to measure strength of direct current?
(c) Tangent Galvanometer
Q2. Marie and Pierre Curie invented which of the following?
Q3. Alexander Graham Bell invented which of the following?
Q4. What is the chemical name of ‘Vinegar’?
(a) Oxalic acid
(b) hydrochloric acid
(c) Acetic acid
(d) Citric Acid
Q5. Why Silver nitrate solution is kept in brown bottles in laboratory?
(a) It reacts with ordinary white bottles
(b) brown bottles stops the passage of light through it
(c) brown bottles do not react with it
(d) brown bottles react with it
Q6. The name of plastic polymer from which combs, toys , bowls etc. can be made is :
(c) Metallic Polysulphides
Q7. The study of Dendrology is associated with:
Q8. Which one among the following is a major source of sugar?
Q9. Plants which grow on saline soils are-
Q10. The food poisoning is caused by :
(a) Clostrideam titeni
(b) Clostrideam boutulium
(c) Salmonela toyphosis
(d) Baslils anthresis