Science Part-II Graduation (Senior Teacher) MCQ Practice

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1The main objective of organisation of science club in school is

A To develop the personality of teachers.

B To develop management skill of principals.

C To connect parents to school.

D To develop creative and organisational capacity of students.

2For aqueous nickel(II), which statement best accounts for the greater thermodynamic stability usually observed for [Ni(en)3]2+ compared with [Ni(NH3)6]2+?

A Ammonia forms stronger metal-metal bonds than ethane-1,2-diamine

B The chelate effect favours the bidentate ligand complex, partly because ligand substitution can increase the number of free particles in solution

C Ethane-1,2-diamine is monodentate, so it leaves more vacant positions for water

D Nickel changes from +2 to +4 only in the ethane-1,2-diamine complex

3Which chemical is commonly used as a food preservative?

A Sodium benzoate

B Cetyltrimethylammonium bromide

C Magnesium hydroxide

D Paracetamol

4In proteins, the peptide linkage is best described as:

A A phosphodiester bond between sugar and phosphate groups

B A glycosidic bond between the C1 atoms of two amino sugars

C An ester bond between two carboxyl groups after loss of carbon dioxide

D An amide bond formed between the carboxyl group of one amino acid and the amino group of another

5Which everyday observation is most directly explained by surface tension of liquids?

A A gas fills the entire volume of a vessel.

B A liquid vapour condenses when cooled.

C Small liquid drops tend to become nearly spherical.

D A solid keeps a fixed crystalline shape.

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Science Part-II Graduation (Senior Teacher) MCQ - Practice Questions

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