UPPCS · Science & Technology · 166 questions
With reference to 'Silver articles', which of the following statements is/are correct ? 1. Silver articles turn black after some time when exposed to air. 2. It happens due to coating of silver sulphide. Select the correct answer from the code given below : Code :
Which of the following two are the major constituent of Bio-gas ? 1. Methane 2. Butane 3. Carbon dioxide 4. Carbon monoxide Select the correct answer from the code given below : Code :
Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R). Assertion (A) : Generally an alloy of lead and tin is used as a material of the fuse wire. Reason (R) : Alloy of lead and tin has a higher melting point than copper and aluminium. Select the correct answer from the code given below : Code :
Which of the following gasses is/are lighter than air ? 1. Hydrogen chloride 2. Sulfur dioxide 3. Helium Select the correct answer from the code given below : Code :
With reference to 'Baking Soda', which of the following statements is/are correct ? 1. It is Sodium hydrogen carbonate. 2. It is used in fire extinguishers. Select the correct answer from the code given below : Code :
Which of the following pairs is/are NOT correctly matched ? (Acid) (Acid found in) 1. Lactic acid - Curd 2. Tartaric acid - Grapes 3. Acetic acid - Potato Select the correct answer from the code given below : Code :
With reference to 'acid and bases', which of the following statements is/are correct ? 1. Acidic solutions have pH more than 7. 2. Basic solutions have pH less than 7. Select the correct answer from the code given below : Code :
With reference to 'Isotopes', which of the following statements is/are correct ? 1. Atoms with identical atomic numbers but different atomic mass numbers are known as isotopes. 2. Protium, Deuterium and Tritium are isotopes of carbon. Select the correct answer from the code given below : Code :
Milk is an example of :
The formula of baking soda is :
Which of the following is known as laughing gas?
Which among the following is a constituent of natural silk?
Which of the following elements is not a Noble gas?
Seaweeds are important source of -
Thermodynamically the most stable form of carbon is
Which among the following compounds is the main constituent of natural gas ?
Sulpha drug is which of the following types of drug ?
Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R). Assertion (A) : A solution of table salt in a glass of water is homogeneous. Reason (R) : A solution having different composition throughout is homogeneous. Select the correct answer from the code given below : Code :
Compressed Natural Gas (CNG) is mainly composed of
Which one of the following pair is NOT correctly matched ?
