851. Chloroform can be used as?
(A) Antimalarial
(B) Antibiotic
C. Anaesthetic
(D) Analgesic
852. An element that does not occur in nature but can be produced artificially is?
(A) Radium
(B) Thorium
C. Plutonium
(D) Uranium
853. ‘Greenhouse effect’ is produced due to the presence of an excess amount of?
(A) Nitrogen dioxide
(B) Sulphur dioxide
(C) Methane
D. Carbon Monoxide
854. Which of the following is biodegradable?
(A) DDT
B. Paper
(C) Aluminium
(D) Plastic
855. Acid rain is caused due to pollution of the atmosphere by?
A. Oxides of nitrogen and sulfur
(B) Oxides of carbon and nitrogen
(C) Oxides of nitrogen and phosphorous
(D)
856. A mixture of water and alcohol can be separated by?
(A) Evaporation
(B) Filtration
(C) Decantation
D. Distillation
857. What is the most abundant element in the human body?
(A) Iron
(B) Nitrogen
C. Oxygen
(D) Carbon
858. Aspirin is chemically known as what?
(A) Hydroxy salicylate
(B) Methyl salicylate
(C) Alkyl salicylic acid
D. Acetylsalicylic acid
859. Which of the following is directly related to Qualitative analysis?
A. Identification
B. Separation
C. Measurement
D. Calculation
860. Which of the following processes is used to separate insoluble particles from liquids?
A. Separation
B. Filtration
C. Crystallization
D. Condensation
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