Which metal can be easily cut with a knife-
(A) Sodium
(B) Mercury
(C) Copper
(D) Iron
Which of the following substances is found in green henna, due to which it turns red?
(A) Lasson
(B) Potassium
(C) Carbon
(D) Iron
Glucose is stored in the human body as-
(A) Starch
(B) Glycogen
(C) Fructose
(D) Maltose
Which type of iron ore has magnetic properties?
(A) Magnetite
(B) Hematite
(C) Limonite
(D) Siderite
What happens in an oxidation reaction?
(A) Addition of oxygen
(B) Addition of hydrogen
(C) Separation of oxygen
(D) Receiving electrons
The reason for the browning of the cut apple is present in the apple-
(A) Calcium
(B) Zinc
(C) Iron
(D) Iodine
Washing soda is the common name for
(A) Calcium carbonate
(B) Sodium carbonate
(C) Calcium bicarbonate
(D) Sodium bicarbonate
Permanent hardness of water may be removed by the addition of
(A) sodium carbonate
(B) alum
(C) potassium permanganate
(D) lime
Which of the following is the most common kidney stone-forming compound?
(A) Calcium oxalate
(B) Magnesium oxide
(C) Sodium bicarbonate
(D) Magnesium citrate
If the pH value of a substance is lower than 7, it would be considered as–
(A) Neutral
(B) Base
(C) Acid
(D) Ion
Get the Examsbook Prep App Today