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Science (Chemistry) Questions For HTET Exam:25th December 2018 (Solutions)

Science (Chemistry) Questions For HTET Exam:25th December 2018 (Solutions)_30.1
Q1. What is the largest component of lower atmosphere, by total volume?
(a) Oxygen
(b) Nitrogen
(c) Helium
(d) Water Vapour
Q2. Acetic Acid is another name for which of the following?
(a) Vinegar
(b)Baking Soda
(c) Copper Sulphate
(d) Magnesium Oxide
Q3. The reaction of Copper Sulphate and Iron produces Iron Sulphate and __________.
(a) Vinegar
(c) Baking Soda
(d) Copper
Q4. ‘Milk Sugar’ is
(a) Lactose
(b) Maltose
(c) Galactose
(d) Sucrose
Q5. The process of depositing a layer of any desired metal on another material by means of electricity is called ___________.
(a) Electroplating
(c) Rusting 
(d) Crystallisation
Q6. Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in –
(a) Conduction
(b) Convection
(c) Radiation
(d) Both conduction and convection
Q7. Silver gets corroded due to ________________ in air.
(a) Oxygen
(b) Hydrogen Sulphide
(c) Carbon dioxide
(d) Nitrogen
Q8. Which of the following is a radioactive element?
(a) Cobalt
(b) Uranium
(c)  Argon
(d) Chromium
Q9. The ‘solid waste’ is also known as
(a) Sedge
(b) Toxic waste
(c) Sludge
(d) Scrubber
Q10. The antiparticle of an electron is –
(a) Positron
(b) Proton
(c) Alpha particles
(d) Beta particles
S6. Ans.(b)
S7. Ans.(b)
S8. Ans.(b)
S9. Ans.(c)
S10. Ans.(a)