NEET MCQ for Chemistry 20

NEET MCQ for Chemistry 20

Q.1.The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
A) 3 Billion years
B) 100 Years
C) 0.01 Minute
D) 13 Days

Q.2.Which of the following is not matter?
A) Gas
B) Book
C) Water
D) Sound

Q.3.Lithium aluminum hydride. LiAlH4 is
A) A reducing agent
B) A oxidizing agent
C) Used for reduction of carbonyl compound
D) Both A) and C)

Q.4.The compressibility of solid is less than liquid as well as gas, because
A) Intermolecular space is very low
B) Intermolecular attraction is very high
C) Thermal energy is very low
D) All of the above

Q.5.Which among the following alloys contain non-metal as one of its constituents?
A) Brass
B) Amalgam
C) Gun metal
D) None of these

Q.6.The value of rate constant of a pseudo first order reaction
A) Depends on the concentration of reactants present in small amounts.
B) Depends on the concentration of reactants present in excess. 
C) Is independent of the concentration of reactants.
D) Depends only on temperature.

Q.7.The freezing point of benzene decreases by 0.45°C when 0.2 g of acetic acid is added to 20 g of benzene. If acetic acid associates to form a dimet in benzene, percentage association of acetic acid in benzene will be (K for benzene = 5.12 K kg mol-1)
A) 64.6%
B) 80.4%
C) 74.6%
D) 94.6%

Q.8.A basic amino acid among the following is
A) Glycine
B) Valine
C) Histidine
D) Leucine

Q.9.Deficiency of vitamin B, causes the disease
A) Convulsions
B) Beri beri
C) Cheilosis
D) Sterility

Q.10.The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of Nat will be
A) -2.55 eV
B) -5.1 eV
C) -10.2 eV
D) +2.55 eV

Q.11.The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is
A) Dalton’s law
B) Gay Lussac’s law
C) Henry’s law
D Raoult’s law

Q.12.What are reactive metals called?
A) Noble gases
B) Alkali metals
C) Alkanes
D) Polymers

Q.13.What does Nucleus consist of?
A) Protons and Neutrons
B) Protons and Electrons
C) Neutrons
D) Protons

Q.14.Which among the following is the most important characteristic of Noble metals?
A) Luster
B) Non reactive nature
C) Preciousness
D) Rare availability

Q.15.The high reactivity of fluorine is due to
A) Its high electro negativity
B) Small size of fluorine atom
C) Availability of d-orbitals
D) Strong F – F bond

Q.16.The most electropositive elements among the following is
A) Na
B) Ca
C) K
D) Cs

Q.17.The inert gases are____in water
A) Sparingly soluble
B) Insoluble
C) Soluble
D) None of these

Q.18.The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
A) 3 Billion Years
B) 100 Years
C) 0.01 Minute
D) 13 Days

Q.19.Which is used in preparation of dynamite?
A) Glycerol
B) Ethyl alcohol
C) Methyl alcohol
D) Glycol

Q.20.Due to rusting the weight of iron
A) Decreases
B) Increases
C) Remains the same
D) Uncertain

Q.21.Brass is an alloy of?
A) Copper and Tin
B) Copper and Zinc
C) Copper and Aluminum
D) Iron and Copper

Q.22.When a piece of quicklime is dipped in water, it gives bubbles. This bubbling is due to which of the following?
A) Oxygen
B) Carbon Dioxide
C) Water Vapour
D) Hydrogen

Q.23.The single acid which dissolves gold is?
A) Aqua regia
B) Hydrochloric acid
C) Nitric acid
D) Selenic acid

Q.24.The process of purifying water by spraying water on to a bed of stones where microorganism live so that the microorganisms feed on the pathogens in water and make the water free from harmful pathogens is called?
A) Stone bed method
B) Biofilter method
C) Aerobic filtration
D) Anaerobic filtration

Q.25.What is the number of synthetic elements in periodic Table?
A) 18
B) 22
C) 24
D) 26

NEET MCQ Chemistry-1
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NEET MCQ Chemistry-3
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