Solution : (d)A,B and D

Solution : Antacid tablet, soap and toothpaste are made up of bases.

Solution : $H_2SO_4$ is a strong acid because it is highly ionized.

Solution : The hydronium ion is written as $H3O^{+}$

Solution : The difference lies in there ionization. Hydrochloric acid is a strong acid which means i...

Solution : Antacid tablet, soap and toothpaste are made up of bases.

Solution : The half life period of nth order reaction varies inversely to (n-1) th power of the init...

Solution : Sulphuric acid ionizes completely when dissolved in water. Hence, it is a strong acid..

Solution : For a second order reaction, the rate is proportional to the square of the concentration ...

Solution : (b)1−A,2−C,3−B,4−D

Solution : The acid present in apples is malic acid. Its formula is $C_4H_6O_5$

Solution : The compound which contains a replaceable hydrogen is an acid.

Solution : $Zn+NaOH \to Na_2ZnO_2+H_2$The compound formed is sodium zincate.

Solution : Metal will displace H+ ions from acid to form salt.

Solution : Y turns phenolphthalein colorless which means it is acidic medium. Thus, Y will vanish sm...

Solution : X changes red litmus to blue therefore, it is a base. Thus, X changes methyl orange to ye...

Solution :(a) lower the pH weaker the base

Solution : d. 1-A, 2-C, 3-B, 4-D

Solution : Petri dish is not required for doing experiment of pH.

Solution : (d) As pH paper turns greenish blue for weakly basic compound and antacids contain weak b...

Solution : Salts which are completely ionisable in water are said to be neutral salts and their pH i...

Solution : Total number of children = Sailing + pottery +neither - both (ie) $80+25+90-15$$= 180\; c...

Solution : $\large\frac{favourable -x}{possible-x}=\frac{3}{5}$$\large\frac{40-x}{50-x}=\frac{3}{5}$...

Solution : $\large\frac{4}{15} =\frac{officers}{6000}$officers = $\large\frac{6000 \times 4}{15}$$\q...

Solution : Let us consider the sum of first five consecutive even integer $2+4+6+8+10=30=x$The sum o...

Solution :choose 2 out of 7 $=7C_2=\large\frac{7 !}{5!\;2!}$$=21$however 1+33 is same as 2+32, so su...

Solution : Original : 3,3,7,10,12New : 1,3,3,7,10,12The mode remains unchanged New average is $\larg...

Solution : Had it been 9, then there would be the number to the left of 10 which is not possibleAll ...

Solution : As $NaCl$ is a neutral solution due to its complete ionisation in $H_2O$ and has $pH = 7$...

Solution : When a base like NaOH is treated with any active metal like Zn, it produces H2 gas. And t...

Solution : Calcium hydroxide is the substance that on treatment with chlorine yields bleaching powde...

Solution : When an acid reacts with metal, a salt and hydrogen gas is formed. i.e

Solution :(a)1−C,2−B,3−D,4−A

Solution :The hydrogen ion concentration in the given substances can be calculated by using the give...

Solution : Potassium hydroxide is used in many of the same applications as sodium hydroxide. In addi...

Solution:The corrosive action of acid on living tissues is due to the catalytic reaction of acid-bas...

Solution : A Lewis base, then, is any species that has a filled orbital containing an electron pair ...

Solution : Phenolphthalein is often used as an indicator in acid–base titrations. For this applicati

Solution : (b)False

Solution:Whether a liquid is an acid or base depends on the type of ions in it. If it has a lot of h...

Solution :The reaction takes place as follows:$HNO_3+NH_4OH \to NH_4NO_3+H_2O$

Solution : Concentration of an acid depends upon the water content whereas the strength of an acid d...

Solution : (a) chemical name of bleaching powder is calcium oxychloride(b) Bleaching powder is used ...

Solution : (b)C and D

Solution : 1-B, 2-D, 3-A, 4-C

Solution : An amphoteric compound is one that can react with both acids and bases.

Solution : $\large\frac{x+y+z}{3}$$=12$=> $x+y+z=36$=> $30+z=36$=> $z= 36-30$=> $z=6$

Solution : Median is the coin which has an equal number of coins of lesser or equal value or equal v...

Solution : Let the number be arranged in ascending order $5,20,22,25,50,55,100$Hence 25 is the media...

Solution : Mode =7 Mean $=\large\frac{3+3+7+9+9+7+6+5+5+7+9+7+3}{12}$$=6.5$Hence Mode exceeds the me...