Which of the following devices cannot measure distance?
a) Vernier Calipers
b) Micrometer
c) Ruler
d) Protractor

Which of the following is the most precise device for measuring length : (a) a vernier callipers with 20 divisions on the sliding scale (b) a screw gauge of pitch 1 mm and 100 divisions on the circular scale. ("c") an optical instrument that can measure length to within a wavelength of light ?

Which of the following is not a fossil fuel ? a.Petroleum b.Natural gas c.Mineral coal d.Wood

Which one of the following is not a poisonous snake ? (A) Cobra (B) Viper (C) Python (D) Krait

Which of the following is a Crustacean? (A) Snail (B) Sea anemone (C) Hydra (D) Prawn

In which of the following yeast is not used ? (A) beer (B) whisky (C) rum (D) none

Which of the following is hermaphrodite ? (A) Ant (B) Aphid (C) Earthworm (D) Cockroach

Which one of the following is not a connective tissue ? (A) Bone (B) Cartilage (C) Blood (D) Muscles

A= {a, b ,{c, d}, e} which of the following statements are correct? a in A

Which of the following is an example of non- biodegradable waste? a.Fruits b.Vegetables c.Paper d.Polythene

Which of the following is indicator of pollution ? (A) Viroids (B) Virus (C) Lichens (D) Algae