Book Online Demo
Check Your IQ
Try Test

Courses

Dropper NEET CourseDropper JEE CourseClass - 12 NEET CourseClass - 12 JEE CourseClass - 11 NEET CourseClass - 11 JEE CourseClass - 10 Foundation NEET CourseClass - 10 Foundation JEE CourseClass - 10 CBSE CourseClass - 9 Foundation NEET CourseClass - 9 Foundation JEE CourseClass -9 CBSE CourseClass - 8 CBSE CourseClass - 7 CBSE CourseClass - 6 CBSE Course

Q.

Metals react with cold water and give:


see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

Metal oxides

b

Metal oxides and oxygen

c

Metal oxides and hydrogen

d

Metal hydroxides and hydrogen 

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

concept - When metals react with water, they form the corresponding metal hydroxide and hydrogen gas.
Metal + water→Metal hydroxide + hydrogen
Some examples of metals reacting with cold water are-
Most metals do not react with water. However, alkali metals react violently with water.
The reaction of sodium metal with water: Sodium metal forms sodium hydroxide and releases hydrogen gas along with a large amount of heat when it reacts with water.
Na +  H 2 O→NaOH +  H 2
The reaction of potassium metal with water: Potassium metal forms potassium hydroxide and releases hydrogen gas along with a large amount of heat when it reacts with water.
K+  H 2 O→KOH +  H 2
The reaction of metallic calcium with water: When calcium reacts with water, it forms calcium hydroxide along with hydrogen gas and heat.
Ca+ 2 H 2 O→Ca (OH) 2  +  H 2
The reaction of metallic magnesium with water: Metallic magnesium reacts slowly with water to form magnesium hydroxide and hydrogen gas.
Mg+ 2 H 2 O→Mg (OH) 2  +  H 2
Thus, metals produce metal hydroxides and hydrogen gas in reaction with cold water.
Hence, the correct option is (3).
 
Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

Related Blogs
Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
Result Producing online coaching for JEE/NEET of south India
Largest All India Test Series for JEE/NEET
Best Books for IIT JEE
Best Books for NEET
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

Related Blogs
Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
Result Producing online coaching for JEE/NEET of south India
Largest All India Test Series for JEE/NEET
Best Books for IIT JEE
Best Books for NEET
whats app icon