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Science Test - 12
Read Instructions for the test.
Negative marks are -0.33 per wrong answer
Right answer is 1 mark
No time limit but finish in 30 mins
Solution can be found at below chapters:
Test series is based on following chapters.
Science Chapter 22: Acids, Bases and Salts
Science Chapter 23: Heat
Science Chapter 24: Force
Q1:Acids have pH
Q2: Natural indicators of acid and base are
Q3: which is incorrect
acetic acid -> vinegar
formic acid -> ant sting
oxalic acid -> spinach, tomato
lactic acid - > citrus fruits
Q4: Which is true ?
Calcium hydroxide ->lime water
ammonium hydroxide -> window cleaner
sodium or potassium hydroxide -> soap
Q5:milk of magnesia is a
Q6: Turmeric turns red with soap as
turmeric is basic
turmeric is acidic
soap is basic
soap is acidic
Q7: Phenolphthalein turns _____ with acid
Q8: Detergents can be used with hard water as
these don’t form scum with hard water
they are sodium or potassium salt of long chain carboxylic acids
detergents are salts of ammonium or sulphonate salts
both A and C
Q9:Acid reacts with base and heat is
heat is not involved
Q10:Blood is ____ in nature.
Q11: We take milk of magnesia [base] when we get indigestion due to
its nutritive value
it gives energy
it is antibiotic
it is antacid
Q12:To remove effect of ant bite [formic acid] we should put what to wound
both A and B
Q13: By adding excess fertilizers soil becomes acidic so we put quick lime or slaked lime to it as
it is acidic
it retains water
it is neutral
it is basic
Q14:To make the soil less basic we add to it
Q15: ____ is used for removing permanent hardness of water and as a cleaning agent.
Q16:Plaster of Paris or calcium hemihydrates is given by
2CaSO4, ½ H2O
3CaSO4, ½ H2O
CaSO4, ½ H2O
Q17:“Energy can neither be created nor destroyed”. is the
law of motion
law of matter
law of thermodynamics
Q18: ____ is the amount of heat absorbed or reject by unit mass of a substance to raiseits temperature by 1°C
latent heat of fusion
latent heat of vaporization
specific heat capcity
Q19: 100 degree fahrenheit is approximately how many in celcius scale
Q20:Solids like camphor, ammonium chloride, naphthalene, anthracene turn from solid to gas on heating. This is called.
Q21:Which is true?
Evaporation occurs as a few particles of a liquid on its surface have higher kinetic energy and they break away from the rest and turn into vapor.
Even on application of pressure the state of matter changes.
Q22: State of matter that consists of super energized and excited ionized gaseous matter is
bose einstein condensate.
super heated liquids
Q23: Bose-Einstein condensate is formed when
gas at very low density is cooled to super low temperatures.
gas at very high density is cooled to super low temperatures.
gas at very low density is cooled to super high temperatures.
gas at very high density is cooled to super high temperatures.
Q24: Natural gas contains
Q25: Nuclear reactors work on
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