Chemistry

Which of the following arrangements is in order of increasing ionization energy?

A. AI, Si, P, S B. Si, AI, S, P C. S, P, Si, AI D. P, Si, S, AI…

6 years ago

Which of the following properties of covalent compounds is not correct? They

A. are non-electrolytes B. are mostly gaseous and volatile liquids C. have low melting point D. have high boiling points…

6 years ago

Which of the statements about the behaviour of the atom is correct?

A. atomic size decreases down the group B. atomic size increases across the period C. anions are smaller than the…

6 years ago

Which of the following metals exists as liquid at ordinary temperature?

A. Copper B. Gold C. Mercury D. Silver Correct Answer: Option C C. Mercury

6 years ago

Which of the following substances cannot be classified as a heavy chemical?

A. AgNO3 B. CaO C. CaOCI2 D. H2SO4 Correct Answer: Option A A. AgNO3

6 years ago

The main function of limestone in the blast furnace is to?

A. act as a reducing agent B. act as a catalyst C. remove impurities D. supply carbon (IV) oxide Correct…

6 years ago

An element Q forms a compound QCI5. In which group of the periodic table is Q?

A. l B. lll C. V D. VII Correct Answer: Option C C. V

6 years ago

Which of the following electronic configurations correctly represents an element in period 3 of the periodic table?

A. 1s² 2s² 2p² B. 1s² 2s² 2p6 C. 1s² 2s² 2p6 3s² 3p4 D. 1s² 2s² 2p6 3s² 3p6…

6 years ago

Which of the following ions is isoelectronic with neon? [3Li, 3F, 10Ne, 17CI, 19K]

A. CI- B. F- C. K+ D. Li,+ Correct Answer: Option B B. F-

6 years ago

The following properties are characteristics of transition elements except?

A. formation of complex ions B. fixed oxidation states C. formation of coloured compounds D. catalytic abilities Correct Answer: Option…

6 years ago