GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 033

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 033

321). Sweat contains
A). pure water
B). water, salt and waste matter
C). phosphoric acid
D). calcium phosphate and water

Answer: water, salt and waste matter


   
322). Carbon dioxide cycle' implies that
A). carbon dioxide moves in the air in a cycle
B). the carbon dioxide structure is cyclic
C). carbon dioxide consumes oxygen
D). oxygen is changed into carbon dioxide by respiration of human beings and then to  oxygen and carbon by green plants

Answer: oxygen is changed into carbon dioxide by respiration of human beings  and then to oxygen and carbon by green plants


   
323). Absolute alcohol is prepared by
A). azeotropic distillation
B). Kolbe's method
C). vacuum distillation
D). fractional distillation

Answer: azeotropic distillation


   
324). Separation of mixtures of two compounds by chromatographic method is based  upon differential
A). adsorption
B). densities
C). absorption
D). solubilities

Answer: adsorption


   
325). The pair of bases in natural nucleic acids which is held by hydrogen bonds is
A). guanine and cytosine
B). guanine and thymine
C). adenine and thymine
D). uracil and thymine

Answer: adenine and thymine


   
326). Which one of the following elements can displace hydrogen gas from dilute  acids?
A). Aluminium
B). Copper
C). Gold
D). Silver

Answer: Aluminium


   
327). Real gas will approach the behaviour of ideal gas
A). low temperature and high pressure
B). high temperature and low pressure
C). low temperature and low pressure
D). high temperature and high pressure

Answer: high temperature and low pressure


   
328). Which among the following is not a redox reaction ?
A). NaOH+HCL -> NaCl+H2O
B). H2+Cl2 -> 2HCL
C). Mg+H2O -> MgO+H2O
D). C+O2 -> CO2

Answer: NaOH+HCL -> NaCl+H2O


   
329). Match List I (Mixtures) with list II(Separation methods) and select the 
Answer:answer using the codes given below the lists
ListI(Mixtures)                         List II(Seperation methods)
1. NaCl in water                      (A) Chromatography
2.I2 in water                           (B)Distillation
3.Red ink and blue ink             (C) Solvent extraction
4.NH4Cl and NaCl                    (D) Sublimation

Below codes are given in A B C D order
A). 3 1 2 4
B). 3 2 1 4
C). 4 1 2 3
D). 4 2 1 3

Answer: 3 1 2 4


   
330). The formation of CO and CO2 illustrates the law
A). reciprocal proportion
B). multiple proportion
C). conservation of mass
D). constant composition

Answer: multiple proportion