The Punjab pair shot a total of 497.9 in the 50-shot final, getting the better of Apurvi Chandela and Yash Vardhan of Rajasthan, who ended with 496.4.
Pooja Ghatkar and Shahu Mane of Maharashtra won bronze with a score of 433.9. This was Anjum's third gold of the nationals.
Anjum and Arjun qualified fifth out of five pairs that made it to the final from the total 24 teams that participated. Each team had to shoot 80 shots, 40 by each shooter, post which the final five pairs were identified.
In the final, however, Anjum and Arjun were never seriously challenged and led from start to finish to easily quell the challenge of the Rajasthan and Maharashtra pair.
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Maharashtra, however, managed to win the junior air rifle mixed team gold through the pair of Prachi Gadkari and Shahu Mane, who shot 493.9 in the final to finish ahead of Elavenil Valarivan and Harshrajsinhji Gohil of Gujarat, who shot 490.6 in the final.
Combining with Nupur Patil, Shahu Mane, who has recently won a Youth Olympic Games quota place, helped Maharashtra to their second gold of the day by winning the youth 10m air rifle mixed team event.
The pair shot 499.6 in the final to beat Zeena Khitta and Surya Pratap Singh (495.7) of Himachal Pradesh. Mehuli Ghosh and Archisman Chakraborti from West Bengal won the bronze with 430.9.
A total of 4800 men and women shooters from across the country are participating in the tournament.
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