14249o.
प्रश्न 1 ते 12 मध्ये प्रत्येक प्रश्नात इंग्रजी वर्णमालेतील अक्षरांच्या पाच गटक्रमिका दिल्या आहेत. त्यापैकी चार गटक्रमिकांमध्ये
काही विशिष्ट साम्य आहे. एक वेगळी आहे. ती शोधा. तेच तुमचे उत्तर आहे. उत्तरपत्रिकेत त्या प्रश्नासमोरील रिकाम्या चौकटीपैकी
त्या पर्यायाच्या चौकटीत अशी X फुली करा.
1.1. MARK
2.1. AF
3.1. AFBH
4.1.AN
2. DARK
2. BG
2. KPLR
2. BP
3. PERK
3. CH
3. MRNT
3. DQ
4. PARK
4. FK
4. GIHK
4. IV
5. BARK
5. GH
5. UZVA
5. KX
5.1. ABD
2. CDG
3. IJM
4. DEH
5. OPS
6.1. ACEG
2. FHL
3. NPRT
4. SUWY
5. RTVW
7.1. PQSUT
2. ZACED
3. MNPRO
4. KLNPO
5. RSTVU
8.1.ZAYB
2. NOMP
3. STRU
4. LMQS
5. FGEH
9.1. AECG
2. BFDH
3. EIFJ
4. FJHL
5. MQOS
10.1, YZXW
2. UVTS
3. ONPQ
4. MNLK
5. KLJI
11.1. ABFG
2. FGKL
3. KLPQ
4. PQRS
5. RSWX
12. 1. MN
2. LM
3. KP
4. JQ
S. IR
Answers
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4
Answer:
a. Sodium amalgam, commonly denoted as Na(Hg), it is an alloy of mercury and sodium.
b. Bauxite(Al2O3.2H2O) is the common ore of aluminium.
c. Metal oxides which react with both acids as well as bases to produce salts and water are also known as amphoteric oxides. For example: Al2O3 is an amphoteric oxide. An amphoteric compound is a molecule or ion that can react both an acid as well as a base to produce salt and water.
d. The device used for grinding an ore is grinding mill.
e. Graphite an allotrope of carbon is a good conductor of electricity.
f. Aqua regia is 1:3 mixture of concentrated nitric and hydrochloric acids. It dissolves noble metals such as gold, palladium, and platinum.
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