1. What type of acid is found in curd?
(A) lactic acid
(B) Citric Acid
(C) Oxalic acid
(D) Other
Answer: (A) lactic acid
2. Which following substances whose taste is sour and which makes the solution of blue litmus red?
(A) Acid
(B) salts
(C) consume
(D) saline
Answer: (A) Acid
3. Who are strongly acidic in the following?
(A) pH = 7
(B) pH = 14
(C) pH = 0
(D) pH = 3
Answer: (C) pH = 0
4. Who does not have oxidation in the following?
(A) Precipitation
(B) Consumption of food
(C) Respiration
(D) combustion
Answer: (A) Precipitation
5. What is free when the basalt is dissolved in water?
(A) (OH) – ion
(B) H + ion
(C) Both ions
(D) No ion
Answer: (A) (OH) – ion
6. What are the causes of Blue Baby Syndrome?
[A] sulfate
[B] chloride
[C] carbonate
[D] Nitrate
Answer: [D] Nitrate
7. What is the compound used in the battery used in the electric car?
[A] magnesium
[B] lithium
[C] sodium
[D] Copper
Answer: [B] lithium
8. Gammaxene, DDT and bleaching powder are compounds of?
[A] sulfur
[B] nitrogen
[C] chlorine
[D] phosphorus
Answer: [C] chlorine
9. Which element is not present in pure sugar?
[A] nitrogen
[B] Hydrogen
[C] carbon
[D] Oxygen
Answer: [A] nitrogen
10. What is Malathion?
[A] pigment
[B] Vitamin
[C] insecticide
[D] carbohydrate
Answer: [C] insecticide