Chemistry - Mock Test 26

Question 251

Most acidic among following is ?

A) HF B) HCl C) HBr D) HI

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Question 252

Halogens react with metals to form ?

A) Halides B) oxides C) halogen compounds D) hydrogenated compounds

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Question 253

Oxide of aluminum is ?

A) acidic B) basic C) neutral D) amphoteric

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Question 254

As compare to beryllium, magnesium is ?

A) less electropositive B) more electropositive C) large in size D) both B and C

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Question 255

Bromine is a non-metal in ?

A) solid state B) liquid state C) gaseous state D) plasma state

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Question 256

As size of atom increases down group, electro positivity ?

A) increases B) decreases C) remains same D) none of above

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Question 257

Elements which have properties of metals and non-metals are ?

A) amorphous B) crystalline C) metalloids D) none of above

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Question 258

Sodium metal is soft due to ?

A) weak metallic bond B) strong metallic bond C) large size D) small size

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Question 259

As we move across period from left to right, reactivity of metals with oxygen ?

A) decreases B) increases C) remains same D) zero

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Question 260

As we move across period electronegativity ?

A) decreases B) increases C) remains same D) becomes zero

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