Case-based Question -1 Read the following …

Case-based Question -1 Read the following and answer any four questions: Salt of a strong acid and strong base is neutral with a pH value of 7. NaCl common salt is formed by a combination of hydrochloride and sodium hydroxide solution. This is the salt that is used in food. Some salt is called rock salts bed of rack salt were formed when seas of bygone ages dried up. The common salt thus obtained is an important raw material for various materials of daily use, such as sodium hydroxide, baking soda, washing soda, bleaching powder. Which of the following does not form an acidic salt? Phosphoric acid Carbonic acid Hydrochloric acid Sulphuric acid Which of the following salts has no water of crystallization? Blue vitriol Washing soda Baking soda Gypsum The formula of baking soda is K2CO KHCO3 NaHCO3 Na2CO3 Which of the following is treated with chlorine to obtain bleaching powder CaSO4 Ca(OH)2 Mg(OH)2 KOH Which of the following salt is used for removing the permanent hardness of water Washing soda Baking soda Bleaching powder NaOH Case-based Question -2 Read the following and answer any four questions: In resistance for a system of the resistor, there are two methods of joining the resistors together as shown below   It showed an electric current in which 3 resistors having resistor R1, R2 and R3 respectively are join end to end i.e series. While the combination of the resistor in which 3 resistors connected together which point X and Y are said to be parallel. The total potential difference across a combination of a resistor in series is equal to V1 + V2 + V3 V1 – V2 +V2 V1 + V2 None of these In a series combination of resistor, the current is same at every point of the circuit different at every point of the circuit zero can not be determined The electrical energy disputed in the resistor is given by W = VIT W = VIR W = RIT W = RT If 5 resistor, each of value 0.2 ohm are connected in series what will be the resultant resistance 1 ohm 10 ohm 6 ohm 8 ohm The figure given below shows three resistors.  Their combined resistance is: 16 ΩΩ 14 ΩΩ 203Ω203Ω 152Ω152Ω Case-based Question -3 Read the following and answer any four questions: In the electrolytic refining of copper. The electrolyte is a solution of acidified copper sulphate. There are an anode and cathode. Refining is carried out by passing an electric current.  The anode is ________. pure strips impure copper refined copper none of these Anode mud consists of: insoluble impurities soluble impurities pure metal impure metal Which of the following are refined electrolytically: (A) Au, (B) Cu, (C) Zn, (D) K A and B B and C A, B and C B, C and D On passing, electric current Cu is deposited on: cathode anode bottom of cathode bottom of anode Which one of the following four metal would be displaced from the solution of its salt by the other three metal? Zn Mg Cu Ag

Obtain the relation between incidence angle, emergence angle, prism angle and deviation angle for refraction through prism How to derive this

How do organisms obtain their nutrition?

How does our body respond when adrenaline is Secreated into the blood

Explain three stages of resource planning

What effect does the concentration of H+(aq) ions have on the nature of the solution

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

• Don't post personal information, mobile numbers and other details.
• Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
• Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
• Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

What is the importance of variation explain in 4 to 5 points

A current of 5 mili mpr is passing through a wire how many electrons are passing through per minute through the area of cross section of the wire

What is the function of petal and sepal.

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

• Don't post personal information, mobile numbers and other details.
• Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
• Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
• Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.