s and p-Block Elements (MCQs + Answer Key)

s and p-Block Elements

.Q.1) Oxides and hydroxides of Group I elements are?

A. acidic

B. alkaline

C. neutral

D. amphoteric

Q.2) The flame color of sodium metal or its compound is?

A. bright crimson

B. violet

C. golden yellow

D. bright blue

Q.3) When sodium burns in air, it forms sodium?

A. monoxide

B. peroxide

C. oxide

D. superoxide

Q.4) The carbonates of alkali metals are not affected by heat except:

A. Li2CO3

B. Na2CO3

C. K2CO3

D. Rb2CO3

Q.5) Green is characteristic of flame color of

A. calcium

B. barium

C. strontium

D. sodium

Q.6) All the carbonates, sulphates and phosphates of alkaline earth metals are ---------in water.

A. sparingly soluble

B. soluble

C. insoluble

D. less soluble

Q.7) The first ionization energy is higher for the

A. alkaline earth metals

B. alkali metals

C. halogens

D. noble gas

Q.8) Which one of the following has the maximum electron affinity?

A. F

B. Cl

C. Br

D. I

Q.9) Which pair has the both members from same period of the periodic table?

A. Na-Ca

B. Na-Cl

C. Ca-Cl

D. Cl-Br

Q.10) Melting points and boiling points of alkali metals

A. decreases from top to bottom

B. increases from top to bottom

C. first increases then decreases

D. remains unchanged

Q.11) Which one of the following oxides is amphoteric in nature?

A. rubidium oxide

B. barium oxide

C. antimony oxide

D. sulphur oxide

Q.12) Oxidizing power of halogen depends upon

A. energy of dissociation

B. electron affinity

C. heat of vaporization

D. all of above

Q.13) Which of following oxide is amphoteric in nature?

A. MgO

B. BeO

C. CO2

D. SnO2

Q.14) Select the correct increasing order of atomic radium?

A. Na>O>S>Al

B. NeS>Al

C. Ne<o<s<="" div=""></o<s

D. Ne>OAl

Q.15) Due to innert pair effect ...........the stable oxidation states........for Sn and Pb.

A. 2+, 4+

B. 1+, 4+

C. 4+, 2+

D. 2+, 3+

Q.16) Highest electron affinity is shown by?

A. F

B. I

C. Br

D. Cl

Q.17) Which is the strongest reducing agent?

A. HF

B. HCl

C. HI

D. HBr

Q.18) Substance boiling at higher temperature among following is?

A. HI

B. HF

C. HCl

D. HBr

Q.19) Group VII-A elements are generally called:

A. halogens

B. noble gases

C. innert gases

D. metalloids

Q.20) The radioactive element in halogen group is

A. radon

B. radium

C. astatine

D. bromine

Answer Key

Q.1) alkaline

Q.2) golden yellow

Q.3) peroxide

Q.4) Li2CO3

Q.5) barium

Q.6) less soluble

Q.7) noble gas

Q.8) Cl

Q.9) Na-Cl

Q.10) decreases from top to bottom

Q.11) antimony oxide

Q.12) all of above

Q.13) BeO

Q.14) Ne<O<S<Al

Q.15) 4+, 2+

Q.16) Cl

Q.17) HI

Q.18) HF

Q.19) halogens

Q.20) astatine

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